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
patrickc's profile
Patrick Collison
Patrick Collison
Patrick Collison
Verified account
@patrickc

Tweets

Patrick CollisonVerified account

@patrickc

Fallibilist, optimist. Stripe CEO.

patrick@stripe.com
patrickcollison.com
Joined April 2007

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 Collison‏Verified account @patrickc 25 Feb 2019
      • Report Tweet
      • Report NetzDG Violation

      Are there any good compendiums of open scientific problems and major unanswered questions, broken down by field?

      12 replies 27 retweets 259 likes
      Show this thread
      Patrick Collison‏Verified account @patrickc 25 Feb 2019
      • Report Tweet
      • Report NetzDG Violation

      Via @misha_saul, this is quite good: https://en.wikipedia.org/wiki/Lists_of_unsolved_problems …

      6:04 AM - 25 Feb 2019
      • 23 Retweets
      • 175 Likes
      • Fateh Singh Mann Ale Ruperti Jeff LaPorte Nico ISMAIL Adam Pearse John Li TAOL101 Steven
      6 replies 23 retweets 175 likes
        1. New conversation
        2. Casey Handmer, PhD‏ @CJHandmer 25 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patrickc @misha_saul

          That one! Would be nice if they had a section on "recent progress".

          1 reply 0 retweets 1 like
        3. Karen in SF‏ @kerobinso_sf 25 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @CJHandmer @patrickc @misha_saul

          haha Casey it's wikipedia! Who is "they"? 😜

          1 reply 0 retweets 2 likes
        4. 3 more replies
        1. Carlos‏ @carloscantu_007 25 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patrickc @misha_saul

          @Topcoder @kaggle @xprize get on it!

          0 replies 1 retweet 1 like
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Richard B Fuisz‏ @richardfuisz 25 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patrickc @misha_saul

          A number of the biochemistry problems on the list have been solved, at least for simple cases.

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. Sam Quigley‏ @emerose 25 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patrickc @misha_saul

          For an article that could have gone off the rails in a tire fire of edit wars, this is actually pretty well-written: https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_philosophy …

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. len‏ @len_unofficial 25 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patrickc @misha_saul

          bio is a shitshow, a list of random qs means little. need an evolutionary fwd timeline where there have been inflection points - eg urey-miller, photosynthesis, eukaryogenesis, multicellularism, transition to land.. - which would be the core open qs that all others dependent on!

          0 replies 0 retweets 0 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. ava kiai‏ @avakiai 26 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @patrickc @misha_saul

          Not sure about the other fields, but the one on neuroscience is a bit off. Some items are too broad (i.e. we know things about parts of what is being asked) or stated such that existing knowledge wouldn't really qualify as an answer. Also missing many problems, but that's a given

          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