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Lisp is responsible for most of the parts of programming widely considered enjoyable.
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Fortran is still often used in some of our most performant libraries.
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POSIX shell was one of the most important parts of unix-like systems becoming how they are today, and it’s compatibility is still an invaluable glue for tying programs written in the 90’s to programs written today.
I was a “ironically” racist as a young teen, it took me till my early adulthood to realise that being ironically racist is just being racist, and the edgy “humour” that is made at others expense isn’t funny or clever, and is incompatible with the kind, empathetic person I wanted to be.
Cringing at my teen self pushes me further into deprogramming myself from that shit, but I’m encouraged by the adage “if you don’t look at yourself from a decade ago and cringe, you wasted that decade”.