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JohnDCook's profile
John D. Cook
John D. Cook
John D. Cook
@JohnDCook

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John D. Cook

@JohnDCook

Consultant in applied math, statistics, data privacy

Houston
johndcook.com
Joined November 2008

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    1. John D. Cook‏ @JohnDCook Jan 30
      • Report Tweet

      You can make a lot of money supporting a dying technology, right before you're unable to make a dime. Demand decreases in terms of number of customers, but increases in terms of intensity among those who need it. Supply and demand both go to zero, but not at the same rate.

      14 replies 55 retweets 145 likes
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      John D. Cook‏ @JohnDCook Jan 30
      • Report Tweet

      First noticed this in the 90's. Companies were desperate for X windows (Unix GUI) developers, until they weren't. Few people knew the tech. Those who did saw the writing on the wall. Nobody new had time to learn it before it went away. But there were applications to maintain.

      6:40 AM - 30 Jan 2020
      • 3 Retweets
      • 16 Likes
      • Ar7 Mark E Andrew Ruiz software mechanic Netrunner Alastair Irvine 🌻⭐🍒☂️💚 CDMConsultants Academe, Math & More William John Holden
      6 replies 3 retweets 16 likes
        1. Johnathan Corgan‏ @jmcorgan Jan 30
          • Report Tweet
          Replying to @JohnDCook

          I still consider myself an expert in Token Ring networking technology; DMs are open.

          0 replies 0 retweets 1 like
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        1. Doug Hall - CaptFun‏ @jagad5 Jan 30
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          Replying to @JohnDCook

          We kept an IBM 486 PC running for more than 10 years because software we needed once a year wouldn't run on "new" computers. The vendor wouldn't convert or even share the code. The software automated nomographs from the '40s & '50s for designs fielded thru thec'60s.

          0 replies 0 retweets 1 like
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        1. Bug Generator  💙‏ @BugGenerator Jan 31
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          Replying to @JohnDCook

          Also, remember Powerbuilder?

          0 replies 0 retweets 1 like
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        1. Raul Miller‏ @raudelmil Jan 30
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          Replying to @JohnDCook

          Related: fads, economic bubbles.

          0 replies 0 retweets 0 likes
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        1. Aaron Farnham‏ @afarnham Jan 30
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          Replying to @JohnDCook

          I noticed this in the late 90s too. Learned COBOL and right out of high school and was immediately making, what seemed to 18 year old me, tons of cash fixing HEB mainframe apps for y2k.

          0 replies 0 retweets 0 likes
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