the Z340 'got solved' and i'm still mad about how dumb the trick was

Reposting my own rant from elsewhere bc people keep DMing me about it. The Zodiac's 340-character cipher — mailed to the SF Chronicle Nov 1969 — sat unsolved for FIFTY ONE years. People wrote PhD-grade software at it. And in Dec 2020 three randos (a web dev in the US, a math guy in Australia, a prog……