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John D. Cook
Consultant in applied math, statistics, data privacy
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John D. Cook Feb 1
We're a little behind schedule according to The Moat in God's Eye, 1974. Still, the year is young.
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John D. Cook Feb 1
Replying to @JohnDCook
Postman died three years before the birth of Twitter.
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John D. Cook Feb 1
“The telegraph may have made the country into ‘one neighborhood,’ but it was a peculiar one, populated by strangers who knew nothing but the most superficial facts about each other.” Neil Postman, Amusing Ourselves to Death, 1985
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John D. Cook Jan 31
Got rid of a LOT of books last year. Just now was the first time I looked for a book that wasn't there.
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Science Tip Jan 29
Gravitational attraction of stars and cows
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John D. Cook Jan 31
"Familiarity is not easily distinguished from truth." -- Daniel Kahneman
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John D. Cook Jan 30
Replying to @StephenPiment
Someone, I think Francis Schaeffer, said that Marxism is a Christian heresy.
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John D. Cook Jan 30
Why would you clean a toddler's face?
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John D. Cook Jan 30
Replying to @stochastician
This stuff works:
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John D. Cook Jan 30
From Walter Isaacson's biography of Steve Jobs: The architects wanted the windows to open. Jobs said no. He had never liked the idea of people being able to open things. ‘That would just allow people to screw things up.”
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John D. Cook Jan 30
Replying to @JohnDCook
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.
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John D. Cook Jan 30
Replying to @dchudz @gcsolaroli
1999 was a good year to be a COBOL programmer, going out with a bang.
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John D. Cook Jan 30
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.
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John D. Cook Jan 30
"Kindness is in our power even when fondness is not." -- Samuel Johnson
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tubelite 6 Jan 19
I have skin in the game, you have sunk cost fallacy, he has Stockholm syndrome
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Daniel de Kadt Jan 28
My wife and I never talk baby talk to our kid. We enforce academic seminar norms and jargon. My child isn’t even 2 yet and can interrupt presenters on the first slide. Adults at family gatherings are shocked when my child asks a question that turns out to be more of a comment.
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John D. Cook Jan 29
A swarm of locusts the size of Moscow
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John D. Cook Jan 29
Updated my page that converts between frequency and pitch to tell you how sharp or flat a frequency is if it doesn't correspond exactly to a chromatic pitch.
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John D. Cook retweeted
Micro SF/F stories Jan 28
Replying to @MicroSFF
"You go inside the box," said the cat, "and because of quantum superposition, until you leave it, doctor Schrödinger is both alive and dead." The cat stared into space for an indefinite time. "But only once."
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Massimo Jan 28
This is one of five F-1 engines that lifted each Saturn V rocket off its launch pad. This is the heart of the engine, the thrust chamber. Two of the engines were discovered in 2012 off Florida on an expedition by Jeff Bezos
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