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.
  • Moments Moments Moments, current page.

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
calestous's profile
Calestous Juma
Calestous Juma
Calestous Juma
Verified account
@calestous

Tweets

Calestous JumaVerified account

@calestous

Professor @BelferCenter @KennedySchool @Harvard | A New Culture of Innovation: Technology, Entrepreneurship and Prosperity (forthcoming book)

bit.ly/2sG3K0T
Joined April 2009

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • 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. Calestous Juma‏Verified account @calestous 12 May 2017

      A liquid #3Dprinter that could be the fastest yet pic.twitter.com/rK71GiKLCx via @businessinsider @MIT

      Business Insider
      Liquid 3D-printer
      "Rapid Liquid Printing" uses gel to suspend its creations. MIT collaborated with furniture firm Steelcase to create it. It prints directly into 3D space, instead of building with layers.
      3 replies 161 retweets 174 likes
    2. Prof Subroto Roy‏ @subyroy 13 May 2017
      Replying to @calestous

      Try as I might I don't understand 3D printing... @calestous @businessinsider @MIT @idrissaberkane @Nvania

      1 reply 0 retweets 2 likes
    3. Nvania‏ @Nvania 13 May 2017
      Replying to @subyroy @calestous and

      Not hard. Extrusion which hardens to solid. Shape of extrusion guided by computerized instruction. Isn't that what it is?

      1 reply 1 retweet 3 likes
      Calestous Juma‏Verified account @calestous 13 May 2017
      Replying to @Nvania @subyroy and

      Like cake icing...

      3:11 PM - 13 May 2017
      • 3 Likes
      • Idriss J. Aberkane Prof Subroto Roy Charles Davidson Gorguette
      1 reply 0 retweets 3 likes
        1. New conversation
        2. Prof Subroto Roy‏ @subyroy 13 May 2017
          Replying to @calestous

          Software originates in textiles I found, complex colourful Indian silk textiles... @calestous @Nvania @businessinsider @MIT @idrissaberkane

          1 reply 0 retweets 1 like
        3. Prof Subroto Roy‏ @subyroy 13 May 2017
          Replying to @subyroy

          seems to me that was 3D printing too...crafts continuing thru millennia @calestous @Nvania @businessinsider @MIT @idrissaberkane

          2 replies 0 retweets 1 like
        4. Nvania‏ @Nvania 13 May 2017
          Replying to @subyroy @calestous and

          More 2d than 3d. But yes crafts have techniques that intersect with one another over time

          1 reply 0 retweets 1 like
        5. Prof Subroto Roy‏ @subyroy 13 May 2017
          Replying to @Nvania

          Punchcard technology came from ancient Indian silk cotton textiles, seem 3D to me @Nvania @calestous @businessinsider @MIT @idrissaberkane

          1 reply 0 retweets 1 like
        6. Prof Subroto Roy‏ @subyroy 13 May 2017
          Replying to @subyroy @Nvania and

          My 2000 Bangalore lectures on the evolution of information technology traced some of this https://www.facebook.com/notes/subroto-roy/my-two-highly-imperfect-ie-defective-lectures-on-the-economics-of-information-te/348977146125 …

          1 reply 0 retweets 1 like
        7. Prof Subroto Roy‏ @subyroy 13 May 2017
          Replying to @subyroy @Nvania and

          "Weaving requires continual change in patterns by which longitudinal and vertical threads (‘warp’ and ‘weft’) come together in a ‘simple’"..

          0 replies 0 retweets 1 like
        8. End of conversation

      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

        • © 2018 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info