SOLVED On the origin of the “No supported key exchange algorithms” error message of sshd

sshd shuts down with “No supported key exchange algorithms” error; Dmitry Gladkov; in Server Fault; 2010-07-07.


Feb 23 12:19:36 sshd[967]: Server listening on port 22.
Feb 23 12:19:36 sshd[967]: Server listening on :: port 22.
Feb 23 12:19:56 sshd[1361]: fatal: No supported key exchange algorithms [preauth]


The ssh host key files are readable by more than merely the owner


$ ls -l /etc/ssh/ssh*key*
-rw-r-----. 1 root root  227 Feb 23 11:56 /etc/ssh/ssh_host_ecdsa_key
-rw-r--r--. 1 root root  162 Feb 23 11:56 /etc/ssh/
-rw-r-----. 1 root root  387 Feb 23 11:56 /etc/ssh/ssh_host_ed25519_key
-rw-r--r--. 1 root root   82 Feb 23 11:56 /etc/ssh/
-rw-r-----. 1 root root 1675 Feb 23 11:56 /etc/ssh/ssh_host_rsa_key
-rw-r--r--. 1 root root  382 Feb 23 11:56 /etc/ssh/


$ ls -l /etc/ssh/ssh*key*
-rw-------. 1 root root  227 Feb 23 11:56 /etc/ssh/ssh_host_ecdsa_key
-rw-r--r--. 1 root root  162 Feb 23 11:56 /etc/ssh/
-rw-------. 1 root root  387 Feb 23 11:56 /etc/ssh/ssh_host_ed25519_key
-rw-r--r--. 1 root root   82 Feb 23 11:56 /etc/ssh/
-rw-------. 1 root root 1675 Feb 23 11:56 /etc/ssh/ssh_host_rsa_key
-rw-r--r--. 1 root root  382 Feb 23 11:56 /etc/ssh/

Sender Policy Framework (SPF)


  • RFC 7372Email Authentication Status Codes; M Kucherawy; IETF; 2014-09.
  • RFC 7208Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1; Kitterman (Kitterman); IETF; 2014-04.
  • RFC 4408Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1; M. Wong, W. Schilitt; IETF; 2006-04


  • ADministrative Management Domain (ADMD)
  • Sender Policy Framework (SPF)

Why Are American Colleges Obsessed With ‘Leadership’? | The Atlantic (2014)

Why Are American Colleges Obsessed With ‘Leadership’?; Tara Isabella Burton; In The Atlantic; 2014-01-22.
Teaser: What’s wrong with being a follower? Or a lone wolf?
Tara Isabella Burton is on a Ph.D. track as a Clarendon Scholar at Trinity College, Oxford; in the areas of theology & literature.

tl;dr → Because they can; because they need more “data.”  The English system is better, they’ve got this figured out already.  Europe, look to Europe for the answers.

Separately noted.


  • Common Application
  • Scholastic Aptitude Test (SAT)
  • Academic Culpability Test (ACT)
  • anti-intellectualism
    American anti-intellectualism
  • Universe (who cares?)
    • Columbia
    • Harvard
    • Tufts
    • Wesleyan
    • Yale
    • Counterpoint (who doesn’t care?)
      • Oxford
      • The English “public” school scheme, writ large.
  • Opposition
    • contributor, participant → bad (a C-)
    • leader, tangible merit → good (A, A+)
  • Attributes (of a successful supplicant)
    • Generally
      • warmth of personality
      • sense of humor
      • energy
      • concern for others
      • grace under pressure.
    • Harvard
      • maturity
      • character
      • leadership
      • self-confidence
  • Definition of Leadership, as a <quote>a broad church of qualities</quote>
    • maturity
    • concern for others
  • Opposition
    • self-confident leader
    • contra
      • natural follower
      • natural team player
      • natural lone wolf
  • Claim:
    The categorical Leadership is culture-specific.
  • <quote>[leaders] will—implicitly—manage those others who are not [leaders].The implicit message behind the rhetoric of leadership is that learning for learning’s sake is not enough.[Leaders are] People who make it to the top. People who can climb the greasy pole of whatever hierarchy they decide to attach themselves to.</quote> attributed to Robert J. Sternberg, College Admissions for the 21st Century



  • Kingman Brewster, President, Yale
  • William Deresiewicz; ex-admissions, Columbia.
  • Emmi Harward
    • director of college counseling, The Bishop’s School, La Jolla, CA
    • Executive Director of the Association College Counselors in Independent Schools
  • Janet Lavin Rapeleye, dean (of admissions?), Princeton.
  • Robert J. Sternberg, Dean of Arts and Sciences, Tufts University.


In The Atlantic:

Via: backfill.



  • PubNub
  • CrunchBase
  • Recent press
    • Twitter integration
    • HARMAN (audio)
  • pubnub, on GitHub
  • BLOCKS, a product (SaaS)
  • PubNub Data Stream Network, a product (SaaS)


  • PubNub powers the Logitech Harmony remote system
  • The remote (handset?) communicates
    • with PubNub services
    • on Amazon AWS
    • via HTTP
    • every five minutes (!!!).
  • Logitech Powers Smart Home Hub, Remote Control and App Using PubNub; a promotion, a case study; in Their Blog; WHEN?

    • Harmony Hub
    • PubNub Data Streams
    • William Chien, Director of Product Management at Logitech.




Tiger Cub Strikes Back: Memoirs of an Ex-Child Prodigy About Legal Education and Parenting | Peter H. Huang

Peter H. Huang (University of Colorado Law School); Tiger Cub Strikes Back: Memoirs of an Ex-Child Prodigy About Legal Education and Parenting; In 1 British Journal of American Legal Studies 297 (2012); 2011-11-11; 51 pages; ssrn:1958366.

tl;dr → starts with a diversity theme, moves on to cultural misunderstandings of the immigrant experience and then it’s just straight out growing up and coming-of-age and launch into adult life.  Wholly within the isolated world of academics & educators.


Available at SSRN

I am a Chinese American who at 14 enrolled at Princeton and at 17 began my applied mathematics Ph.D. at Harvard. I was a first-year law student at the University of Chicago before transferring to Stanford, preferring the latter’s pedagogical culture. This Article offers a complementary account to Amy Chua’s parenting memoir. The Article discusses how mainstream legal education and tiger parenting are similar and how they can be improved by fostering life-long learning about character strengths, emotions, and ethics.

From the paper

I am a Chinese American who at 14 enrolled at Princeton and at 17 began my applied mathematics Ph.D. at Harvard. I was a first-year law student at the University of Chicago before transferring to Stanford, preferring the latter’s pedagogical culture. This Article offers a complementary account to Amy Chua’s parenting memoir. The Article discusses how mainstream legal education and tiger parenting are similar and how they can be improved by fostering life-long learning about character strengths, emotions, and ethics. I also recount how a senior professor at the University of Pennsylvania law school claimed to have gamed the U.S. News & World Report law school rankings.

Responsive to

Amy Chua; Battle Hymn of the Tiger Mother; Penguin Books; 2011; 258 pages; kindle: $10, paper, $0.01+SHT.


  • Amy Chua
  • tiger mom
  • Madeline Levine
  • Martin Seligman
    • founded positive psychology
    • defined flourishing
      requires five items (PERMA)

      1. Positive Emotion
      2. Engagement
      3. Positive Relationships
      4. Meaning
      5. Accomplishment
  • Judgement & Decision-Making (JDM)
  • cognitive intelligence
  • Scholastic Aptitude Test (SAT)
  • Law School Admissions Test (LSAT)
  • Assertions (assumptions of the article, the thesis of the article)
    1. JDM is required for success.
    2. JDM is [the set of] skills of emotion, emotional intelligence.
    3. <quote>education concerning and life-long practice of cultivating one’s character strengths, ethics, and professionalism are crucial to achieving happiess and satisfaction in school, work, and life.</quote>
  • Multi-state Professional Responsibility Examination (MPRE)
  • American Bar Association (ABA), Model Code of Judicial Conduct.
  • Science, Technology, Engineering, Mathematics (STEM)
  • Cites Star Trek, page 22.
    • Star Trek; the original series, Season 1; 1966.
    • Star Trek: The Devil in the Dark; NBC; originally broadcast 1967-03-09.
  • lots of personal antecdotes



  • Paper Tigers; Wesley Yang; In New York Magazine; 2011-05-08.
    Teaser: What happens to all the Asian-American overachievers when the test-taking ends?
  • Mark R. Lepper & David Greene, Undermining Children’s Intrinsic Interest with Extrinsic Reward: A Test of the “Overjustification” Hypothesis, 28 J. PERSONALITY & SOC. PSYCHOL. 129 (1973).
  • Edward L. Deci, Richard M. Ryan, The “What” and “Why” of Goal Pursuits: Human Needs and the Self-Determination of Behavior, 11 PSYCHOL. INQUIRY 227 (2000)
  • Ben Dean, Learning about Learning; In Some Blog entitled AUTHENTIC HAPPINESS; circa 2004,
    tl;dr → defining love of learning, explaining its benefits, and how to develop and nourish it.
  •  Race to Nowhere, a movie

Via: backfill.

WebRTC and STUN for intra-LAN exploration & end-user tracking


  • WebRTC, promotional site
  • Availabilities
    all the browsers that matter

    • Android
    • Chrome (Linux, Android, Windows)
    • Firefox
    • Opera
    • Safari (iOS)




  • RFC 7350Datagram Transport Layer Security (DTLS) as Transport for Session Traversal Utilities for NAT (STUN); Petit-Huguenin, Salgueiro; IETF; 2014-08.
  • RFC 7064URI Scheme for the Session Traversal Utilities for NAT (STUN) Protocol; Nandakumar, Salgueiro, Jones, Petit-Huguenin; IETF; 2013-11.
  • RFC 5928Traversal Using Relays around NAT (TURN) Resolution Mechanism; Petit-Huguenin; IETF; 2010-08.
  • RFC 5389Session Traversal Utilities for NAT (STUN); Rosenberg, Mahy, Matthews, Wing; IETF; 2008-10.

    • RFC 3489STUN – Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs); Rosenberg, Weinberger, Huitema, Mahy; 2003-03.

In Jimi Wales’ Wiki.



In archaeological order


665909webrtc WebRCT Tracking; In Bugzilla of Mozilla; 2011-06-21 →2016-01-11; Closed as INVALID

Some droid using the self-asserted identity token cchen; How to Stop WebRTC Local IP Address Leaks on Google Chrome and Mozilla Firefox While Using Private IPs; In Privacy Online Forums; 2015-01→2015-03.


  • Availability
    of the problem (not of WebRTC in general)

    • Chrome of Google
      • Windows
    • Firefox of Mozilla
      • Unclear, perhaps Windows only
    • Internet Explorer of Microsoft
      WebRTC is not available at all.
    • Opera of Mozilla
      • Unclear
    • Safari of Apple
      WebRTC is not available except through a plugin
    • Unavailable
      • Chrome of Google
        • OS/X
        • Android
      • Linux at all
        not clear; not mentioned at all.
  • Blocking
    • Chrome of Google
    • Firefox of Mozilla
      • Production
        • about:config
        • media.peerconnection.enabled set to true (default true)
      • Development

        • Canary
        • Nightly
        • Bowser
    • Opera of Opera
  • API Directory
    • voice calls
    • video chats
    • p2p file sharing


  • Chrome
    default is available and active
  • Firefox
    • about:config
    • media.peerconnection.enabled set to true (default true)
  • Opera
    only when configured, with a plugin, to run Google Chrome extensions


webrtc-ips, a STUN & WebRTC test rig

  • diafygi/webrtc-ips
  • via on-page JavaScript, makes latent requests to certain STUN servers.
  • Firefox 34 → Does. Not. Work.
  • Fails with
    Error: RTCPeerConnection constructor passed invalid RTCConfiguration - missing url webrtc-ips:58


  • Private Internet Access (PIA)
  • Real-Time-Communication (RTC)
  • Virtual Private Network (VPN)
  • WebRTC


In Privacy Online Forums:


  • 2013
  •  Since WebRTC uses javascript requests to get your IP address, users of NoScript or similar services will not leak their IP addresses.

Via: backfill.


  • about:config
  • media.peerconnection.enabled set to true (default true)

Living on Fumes: Digital Footprints, Data Fumes, and the Limitations of Spatial Big Data | Jim Thatcher

Jim Thatcher (Clark University); Living on Fumes: Digital Footprints, Data Fumes, and the Limitations of Spatial Big Data; In International Journal of Communications (IJC); Volume 8; 2014; 19 pages; landing; previously in Proceedings of the 26th International
Cartographic Conference (ICC), 2014.

tl;dr → whereas capitalism is bad, the critical theory: sociotechnical, epistemic project, abductive processes, epistemic limits, epistemic and ontological commitments, capitalist profit motives, private corporations; frameworks of Marcuse, Pickles. You get the idea.


Amid the continued rise of big data in both the public and private sectors, spatial information has come to play an increasingly prominent role. This article defines big data as both a sociotechnical and epistemic project with regard to spatial information. Through interviews, job shadowing, and a review of current literature, both academic researchers and private companies are shown to approach spatial big data sets in analogous ways. Digital footprints and data fumes, respectively, describe a process that inscribes certain meaning into quantified spatial information. Social and economic limitations of this data are presented. Finally, the field of geographic information science is presented as a useful guide in dealing with the “hard work of theory” necessary in the big data movement.


  • In the introductory paragraph, cites opinements in Fast Company and Mashable as authoritative directional indicators.
  • Two problems
    1. <quote>On the one hand, rather than fully capturing life as researchers hope, end-user interactions within big data are necessarily the result of decisions made by an extremely small group of programmers working for private corporations that have [been] promulgated through the mobile application ecosystem.
    2. On the other hand, in accepting that the data gathered through mobile applications reveal meaningful information about the world, researchers are tacitly accepting a commodification and quantification of knowledge.</quote>
  • Big Data is
    • (wait for it …) very big, “large” even.
    • <quote>data whose size forces us to look beyond the tried-and-true methods
      that are prevalent at that time</quote>, Adam Jacobs.
    • Contrarianism
      • Something vague about Taylorism, Max Weber, etc.
      • Something vague about how having more data is better, or is not better.
    • The Fourth Paradigm
      1. empiricism
      2. analysis
      3. simulation.
      4. explore & exploit
    • Sources
      <quote>Most current studies describing themselves as “big data” with a spatial component revolve around two mobile software platforms [Foursquare, Twitter]</quote>

      • Foursquare
      • Twitter
      • Facebook
      • Flickr
  • Types of Data [plural of types of Datum(s)]
    • Checkin
    • Tweet
  • Livehood
  • 25% of Foursquare users link their Twitter accounts (75% don’t)
  • <quote>Finally, the reliance upon data generated with an explicit motive for profit — both for the end user and the corporation—results in epistemological commitments not dissimilar to concerns raised with regard to the knowledges and approaches privileged by GIS use. </quote>
  • <quote>This hard work of theory opens new knowledge projects within the realm of big data. For example, if the check-in is viewed as a form of disciplining technology — one that reports location to enmesh it more fully in capitalist exchange — then purposeful location fraud takes on new meaning as a potential form of resistance or protest.</quote>


  • private companies
  • profit motives
  • capitalism


  • Digital footprints
  • Digital fumes


  • PostgreSQL
  • R
  • Mac (OS)


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  • Brownlee, J. (2012-03-30). This creepy app isn’t just stalking women without their knowledge, it’s a wake-up call about Facebook privacy. In Cult of Mac.
  • Burgess, J., & Bruns, A. (2012). Twitter archives and the challenges of “big social data” for media and communication research. M/C Journal, 15(5).
  • Carbunar, B., & Potharaju, R. (2012). You unlocked the Mt. Everest badge on Foursquare! Countering location fraud in geosocial networks. In Proceedings of the 2012 IEEE 9th International Conference on Mobile Ad-Hoc and Sensor Systems (MASS), pages 182-190. IEEE Computer Society, Washington, DC.
  • Cerrato, P. (2012-11-01). Big data analytics: Where’s the ROI? InformationWeek: Healthcare.
  • Cheng, Z., Caverlee, J., Lee, K., & Sui, D. (2011). Exploring millions of footprints in location sharing services. In Proceedings of the Fifth International AAAI Conference on WSM. Barcelona, Spain.
  • Crampton, J. (2003). The political mapping of cyberspace. Edinburgh, Scotland: Edinburgh University Press.
  • Crampton, J. (2013). Commentary: Is security sustainable? Environment and Planning D, 31, 571–577.
  • Cranshaw, J., Schwartz, R., Hong, J., & Sadeh, N. (2012). The Livehoods Project: Utilizing social media to understand the dynamics of a city. In Proceedings of the Sixth International AAAI Conference on WSM. Dublin, Ireland.
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  • DeLyser, D., & Sui, D. (2013). Crossing the qualitative-quantitative divide II: Inventive approaches to big data, mobile methods, and rhythmanalysis. Progress in Human Geography, 37(2), 293–305.
  • Eckert, J., & Hemsley, J. (2013-04-11). Occupied Reographies, Relational or Otherwise. Presentation to the American Association of Geographers, Los Angeles, CA.
  • Exner, J., Zeile, P., & Streich, B. (2011). Urban monitoring laboratory: New benefits and potential for urban planning through the use of urban sensing, geo- and mobile-web. In Proceedings of Real CORP 2011. pages 1087–1096. Wien, Austria.
  • Farmer, C., & Pozdnoukhov, A. (2012). Building streaming GIScience from context, theory, and intelligence. In Proceedings of the Workshop on GIScience in the Big Data Age 2012. pages 5–10. Columbus, Ohio.
  • Goodchild, M. (1992). Geographical information science. In International Journal of Geographical Information Systems, 6, 31–45.
  • Goodchild, M. (2007). Citizens as sensors: The world of volunteered geography. In GeoJournal, 69(4), 211– 221.
  • Goodchild, M., & Glennon, J. A. (2010). Crowdsourcing geographic information for disaster response: A research frontier. In International Journal of Digital Earth, 3(3), 231–241.
  • Harley, J. (1989). Deconstructing the map. In Cartographical, 26, 1–20.
  • Hecht, B., Hong, L., Suh, B., & Chi, E. (2011). Tweets from Justin Bieber’s heart. In Proceedings of the ACM CHI Conference 2011. pages 237–246. Vancouver, BC.
  • Heidegger, M. (1977). The question concerning technology and other essays. W. Lovitt, Translator. New York, NY: Harper Perennial.
  • Hey, T., Tansley, S., & Toelle, K. (Eds.). (2009). The fourth paradigm: Data-intensive scientific discovery. Richmond, WA: Microsoft Research.
  • Horvath, I. (2012). Beyond advanced mechatronics: New design challenges of social-cyber systems. (Draft paper.) In Proceedings of the ACM Workshop on Mechatronic Design, Linz 2012. Linz, Austria
  • Jacobs, A. (2009). The pathologies of big data. In ACM Queue, 7(6), pages 1–12.
  • Joseph, K., Tan, C., & Carley, K. (2012). Beyond “local,” “categories” and “friends”: Clustering Foursquare users with latent “topics.” In Proceedings of ACM Ubicomp 2012. pages 919–926. Pittsburgh, PA.
  • Kingsbury, P., & Jones III, J. P. (2009). Walter Benjamin’s Dionysian adventures on Google earth. In Geoforum, 40, 502–513.
  • Kitchin, R., & Dodge, M. (2007). Rethinking maps. In Progress in Human Geography, 31, 331–344.
  • Kling, F., & Pozdnoukhov, A. (2012). When a city tells a story: Urban topic analysis. In Proceedings of ACM SIGSPATIAL 2012. pages 482–485. Redondo Beach, CA.
  • Lathia, N., Quercia, D., & Crowcroft, J. (2012). The hidden image of the city: Sensing community well-being from urban mobility. In Pervasive Computing,/em>, 7319, 91–98.
  • Laurila, J., Gatica-Perez, D., Aad, I., Blom, J., Bornet, O., Do, T., Dousse, O., Eberle, J., & Miettinen, M. (2012). The mobile big data challenge. Nokia Research.
  • Livehoods, demonstrator & promotional site. (2012).
  • Lohr, S. (2012-12-29). Sure, big data is great. But so is intuition. The New York Times.
  • Long, X., Jin, L., & Joshi, J. (2012). Exploring trajectory-driven local geographic topics in Foursquare. In Proceedings of ACM Ubicomp 2012. pages 927–934. Pittsburgh, PA.
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Via: backfill.

Private: Compendium of Palace Intrigue at Yahoo through 2016-02-14

Continued from the Compendium through 2016-01-31
Onward to the Compendium through 2016-02-29.

The Organization Kid | David Brooks (2001)

The Organization Kid; David Brooks; In The Atlantic; 2001-04.
Teaser: The young men and women of America’s future elite work their laptops to the bone, rarely question authority, and happily accept their positions at the top of the heap as part of the natural order of life.

tl;dr → 13,000 words


  • (Introduction)
  • The Origins of the Organization Kid
  • The Moral Life of the Organization Kid
  • Compelled by the Knightly Spirit
  • “Love and Success and Being Happy”
  • (Wrapup)



  • Harvard
    • Teddy Roosevelt
    • John Reed
  • Princeton
    • Hobey Baker
    • Allen Dulles
    • Adlai Stevenson
    • F. Scott Fitzgerald


  • Jeffrey Herbst, professor, politics, Woodrow Wilson School of Public and International Affairs, Princeton University
  • Fred Hargadon, ex-dean of admissions, Princeton
  • Brainerd Alden Thresher; College Admissions and the Public Interest,, a booklet, 1966
    • poetic frame of mind
    • prudential frame of mind
  • Dave Wilkinson, professor, physics, Princeton
  • Robert Gamble, tennis director, some camp, New Hampshire.
  • Kathryn Taylor, class of 1974, administrator, alumni affairs, Princeton
  • Aaron Friedberg, “teaches,” international relations Princeton.
  • Kathleen Deignan, dean of undergraduate students, Princeton.
  • Robert Wuthnow, unstated, a sociologist.
  • Robert George, professor, politics, Princeton.

Via: backfill.

Opera is acquired by a Chinese consortium (Kunlun, Qihoo 360, Golden Brick, Yonglian)

In archaeological order

Opera gets $1.2 billion buyout offer from mix of Chinese firms, board recommends deal; ; In ZDNet; 2016-02-10.
Teaser: There is “strong strategic and industrial logic to the acquisition,” according to the software maker’s CEO.

Original Sources


  • Price
    • $1.2B USD
    • 53% above Oslo close 2016-02-04.
  • Consortium
    • media
      • Kunlun
      • Qihoo 360
    • pure-play investment
      • Golden Brick
      • Yonglian
  • Who
    • Lars Boilesen, CEO, Opera
    • Sverre Munck, chairman of the board, Opera
    • Yahui Zhou, CEO, Kunlun,
  • Process
    • For sale since 2015-08.
    • Representors
      • Morgan Stanley International
      • ABG Sundal Collier

Qihoo 360-Led Chinese Consortium Makes $1.2 Billion Offer for Opera; Rick Carew (Hong Kong), Kjetil Malkenes Hovland (Oslo); In The Wall Street Journal (WSJ); 2016-02-10.
Teaser: Bid for Norwegian company adds to a busy start to 2016 for outbound Chinese acquisitions


  • Opera Software ASA, Norway
  • A consortium of Chinese companies
    • Operators
      • Qihoo 360 Technology Co.
      • Beijing Kunlun Tech Co.
    • Investors
      • Golden Brick
      • Silk Road Fund Management (Shenzhen) LLP
      • Yonglian (Yinchuan) Investment Co.
  • Bid (proposal)
    • Equivalently
      • $1.2B USD in cash
      • 71 Norwegian kroner ($8.27)/share
    • Factoid
      • a 46% premium over trading 2016-02-05
      • <quote>When trading resumed on Wednesday, the stock soared more than 40%, and closed up 33% at 65.10 kroner.</quote>
    • Support
      • Board of Directors, Opera Software ASA
      • 33% of the shares
  • Valuation
    • 2016: $690 million → $740 million (range)
    • 2015: $616 million.
  • Consortium
  • Competition
    sources via StatCounter

    • Android of Googleof Alphabet
      • Chrome → 36.8% market share
    • Microsoft
      • unstated products & market share.
    • Alibaba Group Holding Ltd.
      • UCWeb → ~20% market share
  • Market Share
    sources via StatCounter

    1. Something
    2. Something
    3. Safari
    4. Opera (Phone)→ 10.8%
    5. something
    6. Opera (All; Phone, Tablet, Laptop) → 5.7%
  • Background
    • Qihoo is
      • <quote><snip/>in the process of delisting from the New York Stock Exchange after agreeing in December to a buyout by a consortium including its chairman for $9 billion.</quote>
      • makes mobile and PC antivirus software,
      • operates a search engine
        • No. 2 search engine in China
        • Search engine behind Baidu Inc.
      • has a “secure” Web browser.
    • Kunlun
      • a 60% stake in gay-dating app Grindr LLC for $93 million 2016-01.
    • Other acquisitions by Chinese companies.
  • Who
    • Yu Ling, press relations, Qihoo
    • Havard Nilsson, staff, Carnegie ASA.


In The Wall Street Journal (WSJ):

Structural and semantic deficiencies in the systemd architecture, another jeremiad | V.R.

Some dude using the self-asserted identity token V.R.; Structural and semantic deficiencies in the systemd architecture for real-world service management, a technical treatise; In Some Blog; 2015-10-11.

tl;dr → A jeremiad; 8100 words; systemd is bad, he doesn’t like it.


His point, and he does have one, is that
  • There are simply too many notes
  • And there is insufficient reference to the priors in the art
  • Oh! and it’s full of bugs! Lots! Of! Bugs!
Not shown:
  • the way forward
  • a complete viable alternative
    • complete in a technical sense of solving the problem
    • complete in a cultural sense of having an adiabatic transition to the new phase
  • that sticking with tangled masses of stylized /bin/sh (ahem, the SysV initscripts), better, possible or even an option.  That system worked “well enough ” that you knew getting away from it would be messy.
And yet
  • Mel Conway’s Law is iron
  • Lennart Poettering & Kay Sievers operate as a single organization.
  • Therefore systemd evolves onward as a single-process central-element architectural solution to the problems it addresses; all-in or out.
    Similar to the monolithic_macrokernel-vs-microkernel culture wars of the ’90s.  The Linux kernel is … go on, say it.


  • Preface and disclaimer (!)
  • Everything is a Unit (but it doesn’t mean a lot)
  • Job queuing
  • The transaction manager
  • To live is to depend
  • Every problem can be solved by a layer of indirection
  • Bus APIs, connections and object interface duplication
  • cgroup writing
  • Parsing in critical paths
  • Non-generic fd-holding and socket preopening
  • Inexpressive unit file options
  • Imbalance between promoting laziness or eagerness
  • Targets over milestones for synchronization
  • The (system-specific) problem of readiness notification
  • Intertwining of global system and service state
  • journald, central I/O bottleneck
  • In conclusion


In order of appearance in the piece



And for a guy interest in respect for the elders who have trod the trails before stand silent

Via: backfill.

Web Privacy Census | Altaweel, Good, Hoofnagle

Ibrahim Altaweel, Nathaniel Good, Chris Jay Hoofnagle; Web Privacy Census; In Technology Science; 2015-12-15.

tl;dr → there are lots of (HTML4) cookies; cookies are for tracking; cookies are bad. factoids are exhibited.


Most people may believe that online activities are tracked more pervasively now than they were in the past. In 2011, we started surveying the online mechanisms used to track people online (e.g., HTTP cookies, Flash cookies and HTML5 storage). We called this our Web Privacy Census. We repeated the study in 2012. In this paper, we update the study to 2015.


  • Universe
    • Quantcast
    • “top 1 million”
  • Attack
    • Firefox 39
    • OpenWPM
  • Client
    • HTML4 Cookies
    • HTML5 Storage
    • Flash
  • Use Cases
    indistinguishable in the census method

    • Analytics
    • Tracking (Trak-N-Targ)
    • Conversion
    • Personalization
    • Security


Onboarding the Always-On Generation | WSJ

Onboarding the Always-On Generation; Gary Beach; In The Wall Street Journal (WSJ); 2016-01-20.

Gary J. Beach

tl;dr → some factoids, a book promo.

Original Sources


  • Generation Z
  • always on generation
  • multi-generational workforce
  • Definition: Generation Z
    <quote>four years after the Web was invented<quote>

    • (maybe?) 1998 = 1994+4,
    • (alternate?) 2001 = 1997+4.
  • The Great Recesssion
    circa 2008-2016.



For color, background & verisimilitude

  • Bob DiGuardia, Suffolk University in Boston MA.
    • Director of Enterprise Applications
    • Adjunct Professor of Management
  • Anna Matthai, Research Manager, CompTIA.
  • Anthony Denhart, university relations manager for General Electric
  • Dan Schawbel, founder. Millennial Branding; Promote Yourself: New Rules for Career Success (St. Martin’s Griffin, 2014-09-02, 304 pages, kindle: $10, paper: $5+SHT).


Get Ready for Generation Z; Enactus, Robert Half International; 2015-07; 24 pages.

  • Joe Kristy (IBM); The Changing Workforce: Urgent Challenges and Strategies, Human Capital Management Practice, IBM; 2007.
  • Bruce Tulgan, founder, RainmakerThinking.

The Real Roots of Midlife Crisis are in the U-Curve | The Atlantic

The Real Roots of Midlife Crisis; Jonathan Rauch; In The Atlantic; 2014-12.
Teaser: What a growing body of research reveals about the biology of human happiness—and how to navigate the (temporary) slump in middle age

Jonathan Rauch is

  • a contributing editor of The Atlantic
  • a contributing editor of the National Journal
  • a senior fellow at the Brookings Institution.

tl;dr → 6200 words; the U-Curve, the happiness U-curve, happiness economics, wisdom research


  • the middle age is defined as “the 40s into the early 50s”
  • Donald Richie
  • Richard Easterlin
    • University of Pennsylvania
      • 1970s
    • University of Southern California
      • contemporary
  • Happiness Economics
  • David Blanchflower
    • labor economics
    • Dartmouth
  • Andrew Oswald
    • labor economics
    • University of Warwick
  • Carol Graham
    • developmental economics
    • Brookings Institution
  • median nadir, age 46
  • Carol Graham, Milena Nikolova; A Study. That. Shows.; uncited, undated.
  • Caveats
    • occurs (mostly) in wealthy countries
    • only “adjusting” for variables
      • income
      • marital status
      • employment
  • Carol Ryff
    • psychologist
    • director, Institute on Aging, University of Wisconsin.
  • Claim, due to Blanchflower, Oswald
    <concept>aging from age 20 to age 45 entails a loss of happiness equivalent to one-third the effect of involuntary unemployment.</concept>
  • Andrew Oswald, Terence Cheng, Nattavudh Powdthavee; A Study. That. Shows; uncited; undated.
    tl;dr → found the U-shaped curve in 4 longitudinal data sets.
  • David Blanchflower, Andrew Oswald; A Study. That. Shows. uncited; undated
    tl;dr → a hill-shaped pattern in the use of antidepressants, peaking in people’s late 40s, doubling the likelihood of using antidepressants.
  • Andrew Oswald, et al. (4x others); A Study. That. Shows; uncited, 2012.
    tl;dr → find the U-Curve in chimpanzees and orangutans via zookeeper interviews.
  • Lifecycle Model
    due to an anonymous 2x friends of the author

    • 20s → exciting
    • 30s → hard work, steady rewards
    • 40s → surprises, problems, setbacks.
    • 50s → better
  • Laura Carstensen, et al. (7x others); A. Study. That. Shows; uncited; 2011.
    tl;dr → <quote>the peak of emotional life may not occur until well into the seventh decade <snip/> often met with disbelief in both the general population and the research community,</quote> <quote>As people age and time horizons grow shorter, people invest in what is most important, typically meaningful relationships, and derive increasingly greater satisfaction from these investments.</quote>
  • Elaine Wethington
    • professor
    • human development and sociology
    • Cornell
  • Andrew Oswald, quoted.
  • Hannes Schwandt
    • is young
    • economist
    • Center for Health and Wellbeing, Princeton University
    • A Study. That. Shows; uncited, undated.
      tl;dr → German longitudinal survey, with data from 1991 to 2004
      <concept>So youth is a period of perpetual disappointment, and older adulthood is a period of pleasant surprise. </concept>

      • young people overestimate how happy they will be 5 years later
      • old people underestimate how happy they will be 5 years later
      • middle people have two effects
        tend to feel both disappointed and pessimistic, a recipe for misery.

        • satisfaction with life is declining (that’s the U-curve, which manifested itself clearly)
        • expectations were also by then declining (in fact, they were declining even faster than satisfaction itself). middle-aged people
      • <quote>This finding, supports the hypothesis that the age U-shape in life satisfaction is driven by unmet aspirations that are painfully felt during midlife but beneficially abandoned and felt with less regret during old age.</quote>
  • Dilip V. Jeste
    • is distinguished
    • psychiatrist
    • professor, University of California at San Diego
    • past president, American Psychiatric Association
    • a wall full of awards; a paragraph of recitals.
    • 2x Studies. That. Show
      • 2006
      • 2013
    • wisdom research
  • Lisa Eyler
    • clinical psychologist
    • University of California, San Diego (UCSD)
  • wisdom research
    • defined: <quote>The traits of the wise tend to include compassion and empathy, good social reasoning and decision making, equanimity, tolerance of divergent values, comfort with uncertainty and ambiguity. And the whole package is more than the sum of the parts, because these traits work together to improve life not only for the wise but also for their communities. Wisdom is pro-social. (Has any society ever wanted less of it?) </quote>
    • <quote> psychological screening test for wisdom contains 39 quite diverse questions; psychologists at UCSD are working on reducing the number to a more manageable dozen</quote>
    • an emergent property
  • Dilip Jeste, Lisa Eyler
    • conducted brain-imaging experiment in an fMRI machine
      observing compassion (which is an element of wisdom)
    • subject
      • age 71
      • female
      • business coach
      • pseudonym: J. (just the initial)
  • Unnamed authors (German); “Don’t Look Back in Anger! Responsiveness to Missed Chances in Successful and Nonsuccessful Aging,” In Some Venue; 2012; landing.
    tl;dr → old people have a reduced regret response. The regret response is defined as feeling unhappy about things one can’t change.
  • “Young people just have more negative feelings,” attributed to Elaine Wethington.
  • “Young people are miserable at regulating their emotions,” attributed to Laura Carstensen.
  • Old people show more spirituality, to offset decline in reasoning, due to Dilip Jeste.
  • Gail Sheehy; Passages: Predictable Crises of Adult Life, 1974.
    tl;dr → parable of the midlife crisis of a man
  • Elaine Wethington; A Study. that. Shows; uncited; 2000.
    tl;dr→ 1/4 Americans have experienced a midlife crisis; there is stigma attached to the “crisis” concept.
  • Hannes Schwandt, is quoted.
  • Andrew Oswald, is quoted.


Via: Carol Graham, Milena Nikolova; work uncited; undated; based on Gallup polling, United States.

Via: backfill.

HOWTO Disable HTML5 Video Autoplay in Firefox

media.autoplay.enabled = false [default true]

Does not work until Firefox 41:

  • 1242713media.autoplay.enabled=false does not prevent videos on youtube to autostart; In Bugzilla of Mozilla; 2016-01-25→current.; still open.
    tl;dr → describes Firefox 42, on Linux.
  • 659285Extend media.autoplay.enabled to provide a way to disable untrusted play() invocations; In Bugzilla of Mozilla; 2011-04-24→2016-01-25; resolved as fixed.

Background on SilverPush PRISM Ultrasound Beacons for Cross-Device Tracking


  • SilverPush SDK is in adware (apps of phones).
  • Broadcast transmission of signals
    Broadcast television inflicts watermarked commercials on Consumer Premises Equipment (CPE)
  • CPE transmits back to home base with the acknowledgement of the signal received.
    Cross-device linking is developed by correlating time & network provenances.


  • SilverPush
  • Founded 2012
  • Founders
    • Hitesh Chawla
    • Alex Modon
    • Mudit Seth
  • Locations
    • Gurgaon
    • New Delhi
    • offices in San Francisco
  • Investors
    • M&S Partners, JP; Hiro Mashita
    • IDG Ventures
    • 500 Startups; Dave McClure
    • Unilazer Ventures; Ronnie Screwvala
  • Product Lines
    • Unique Audio Beacon (UAB)
      Cross-channel attribution
    • PRISM
      Real-Time TV Ad Analytics
    • Syncads
      <buzz>Moment Marketing</buzz>
  • Customers
    • Airtel
    • Candy Crush
    • Domino’s
    • Kabam
    • Myntra
    • Proctor & Gamble
    • Samsung



Via: backfill.