Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
patio11's profile
Patrick McKenzie
Patrick McKenzie
Patrick McKenzie
@patio11

Tweets

Patrick McKenzie

@patio11

I work for the Internet, at @stripe, mostly on accelerating startups. Opinions here are my own.

東京都 Tokyo
kalzumeus.com
Joined February 2009

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Patrick McKenzie‏ @patio11 15 Jan 2018
      • Report Tweet
      • Report NetzDG Violation

      Patrick McKenzie Retweeted Karen López

      I am reminded of the (perhaps apocryphal) response of Mizuho Securities regarding whether they would fire the operator who sold 600k shares for 1 yen instead of 1 share for 600k yen: "Why would I fire someone who I had just spent [~$300 million] training to be careful?"https://twitter.com/datachick/status/952609286584025088 …

      Patrick McKenzie added,

      Karen López @datachick
      The press seems to be pressing to have the person who caused this error to be fired. I say “NO.” The person who made this mistake, during what was supposed to be an internal test, is the “guy” you now want in this job. Mistakes like this almost always make people better.
      Show this thread
      4 replies 112 retweets 220 likes
      Show this thread
    2. Patrick McKenzie‏ @patio11 15 Jan 2018
      • Report Tweet
      • Report NetzDG Violation

      Root cause analysis for that one included: * A trading application where it was easy to swap the two values. * Absence of sufficient required confirmations. * Cultural problems at Mizuho which left staff afraid to countermand clear errors. * Same at Tokyo Stock Exchange.

      1 reply 5 retweets 35 likes
      Show this thread
    3. Patrick McKenzie‏ @patio11 15 Jan 2018
      • Report Tweet
      • Report NetzDG Violation

      Regulator to stock exchange: "When did you become aware of that order?" "$TIME." "Who became aware first?" "$PERSON." "Why did they not countermand the order?" "Mizuho Securities sent it to us and they felt unable to overrule..." "YOU ARE THE STOCK EXCHANGE. YOU HAVE ONE JOB."

      1 reply 5 retweets 26 likes
      Show this thread
    4. Patrick McKenzie‏ @patio11 15 Jan 2018
      • Report Tweet
      • Report NetzDG Violation

      (A thing that I genuinely like about engineering culture over here, heavily influenced by a certain automobile manufacturer near Nagoya, is that "andon cords" and virtual equivalents are widely, widely deployed. https://en.wikipedia.org/wiki/Andon_(manufacturing) … )

      2 replies 5 retweets 42 likes
      Show this thread
    5. Patrick McKenzie‏ @patio11 15 Jan 2018
      • Report Tweet
      • Report NetzDG Violation

      (It's, conceptually, a big red button which causes an expensive remediation. The important part is not the cord/button, it is the organizational expectation that, if you suspect a quality issue, you are *responsible* for pushing button and your concern *will* be addressed.)

      1 reply 7 retweets 48 likes
      Show this thread
      Patrick McKenzie‏ @patio11 15 Jan 2018
      • Report Tweet
      • Report NetzDG Violation

      Anyhow: operator error is a thing; properly engineered applications and processes assume that operators will occasionally make mistakes and should be designed to be robust against them.

      1:47 AM - 15 Jan 2018
      • 24 Retweets
      • 67 Likes
      • Mariah Lambton Jeffrey Hyer Jan Elizabeth Bell Duncan Aitken #ohyeah #learn #infosec #comedic #investing #cyber Andrew Petro Conrad Owen Toe Knuckle Daniel Houck
      2 replies 24 retweets 67 likes
        1. mrkirkland‏ @mrkirkland 15 Jan 2018
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patio11

          except of course when you're using a blockchain /ducks for cover

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Dagan‏ @ardrigh 15 Jan 2018
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patio11

          great thread 👍

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info