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.
  • 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
jimpreston's profile
Jim Preston
Jim Preston
Jim Preston
@jimpreston

Tweets

Jim Preston

@jimpreston

Innovation entrepreneur, science, tech, mtn biker, founded / co-built 2 industry leading companies, one was pioneering, failed 4 times with big idea companies.

Silicon Valley, California
svstartuplab.com
Joined November 2008

Tweets

  • © 2019 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. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      Cryptocurrencies use cryptographic techniques plus distributed storage to create non-material entities that are nonetheless impossible to fake. You don't have to worry whether a Bitcoin is a *real* Bitcoin. 3/

      13 replies 51 retweets 190 likes
      Show this thread
    2. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      It can, however, be stolen -- just like real gold coins. You can take precautions, but you can do that with gold coins too --or for that matter with money in your bank account, which is also nonmaterial http://fortune.com/2017/12/08/bitcoin-theft/ … 4/

      9 replies 59 retweets 179 likes
      Show this thread
    3. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      The questions you should ask are (1) what problem does this clever solution solve? (2) what determines the fundamental value? As far as I can tell, there are no good answers to either question 5/

      75 replies 77 retweets 306 likes
      Show this thread
    4. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      Cryptocurrency lets you make electronic transactions; but so do bank accounts, debit cards, Paypal, Venmo etc. All these other methods involve trusting a third party; but unless you're buying drugs, assassinations etc. that's not a big deal 6/

      132 replies 71 retweets 269 likes
      Show this thread
    5. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      And the distributed database + costly mining makes cryptocurrencies clunky and much less useful for ordinary transactions that humdrum methods -- to the extent that even Bitcoin conferences won't accept Bitcoin payments 7/https://slate.com/technology/2018/01/the-most-important-blockchain-conference-of-the-year-wont-take-bitcoin-for-last-minute-sales.html …

      30 replies 78 retweets 233 likes
      Show this thread
    6. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      Meanwhile, what backstops a cryptocurrency's value? Paper money is ultimately backed by governments that will take it in payment of taxes (and central banks that will reduce the monetary base in case of inflation) 8/

      68 replies 79 retweets 203 likes
      Show this thread
    7. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      Gold is actually useful for some things, like filling teeth and making pretty jewelry; that's not most of its value, but it does provide a tether to reality, along with a 5000-year history 9/

      60 replies 63 retweets 217 likes
      Show this thread
    8. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      Cryptocurrencies have none of that. If people come to believe that Bitcoin is worthless, well, it's worthless. Its price rise has been driven purely by speculation -- by what Robert Shiller calls a natural Ponzi scheme, in which early entrants make money only bc others buy in 10/

      73 replies 176 retweets 409 likes
      Show this thread
    9. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      The Bitcoin market is also, by the way, very vulnerable to manipulation by unknown players http://voxeu.org/article/price-manipulation-bitcoin-ecosystem … One of these players may have been the government of North Korea https://ftalphaville.ft.com/2018/01/18/2197837/a-theory-about-the-recent-crypto-price-plunge/ … 11/

      36 replies 129 retweets 328 likes
      Show this thread
    10. Paul Krugman‏Verified account @paulkrugman 21 Jan 2018
      • Report Tweet

      So the blockchain in interesting, but not yet clear whether it's useful for anything. And investing in Bitcoin still looks a lot less reasonable than investing in cold fusion 12/

      164 replies 111 retweets 402 likes
      Show this thread
      Jim Preston‏ @jimpreston 21 Jan 2018
      • Report Tweet
      Replying to @paulkrugman

      Not right Paul. Please don't confuse cryptocurrencies with the blockchain technology. The coins are only one use and there are others. See the Linux Foundation Hyperledger project. Lots of big name companies working on this.

      8:11 AM - 21 Jan 2018
      0 replies 0 retweets 0 likes

      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

        • © 2019 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info