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"Why would anyone want to live in the Ozarks?"

This sign sums things up perfectly #assistedsuicide

What exactly is Bitcoin's proof-of-work task? Popular descriptions aren't quite right. johndcook.com/blog/2025/06/2…

Mathematician: After 90 years we have improved the constant 4 to 3.993 Physicist: 4 and 3.993 are the same number Data scientist: I’m making lots of money

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"Oh, Adam's sons, how cleverly you defend yourself against all that might do you good!” - Aslan (C.S. Lewis, The Magician’s Nephew)

I think this is right.

I still think about this sometimes.

Just thought of a funny tweet but I’m in London

Observation/opinion: Math-inspired rhythms are more pleasant to listen to than math-inspired melodies. #mathrock

Don't be afraid to have children; they are a blessing from God and one of the greatest joys in all life.

Sometimes it's best to read the news in Pidgin....

Why cryptocurrencies use hash puzzles for proof-of-work johndcook.com/blog/2025/06/2…

Thinking about writing a tutorial on Dollar in the style of a Bitcoin tutorial. * How to acquire dollars * How to put dollars in a wallet * How to spend dollars * Self-custodial dollars …

New post: Arithmetic for fun and profit johndcook.com/blog/2025/06/2…