Judging by the title, it sounded like the biggest discovery of 2021... by someone waking after a long coma. It was discovered in 2012: https://www.destroyallsoftware.com/talks/wat

I really enjoyed the questions... and even though I am working in TypeScript, I got only 9/25. Precisely because I avoid f---ed up parts of JS, except for trivia games (https://dorey.github.io/JavaScript-Equality-Table/unified/, http://www.jsfuck.com/).

Some parts of code need not to be understood. They need to be blocked by types, tests, and linters (https://p.migdal.pl/2020/03/02/types-tests-typescript.html).