@lexfri From https://nautil.us/could-an-industrial-civilization-have-predated-humans-on-earth-352964/:

> The moon's going to be there for 5 billion years. That's a long time for somebody to come by and detect, maybe, a strange pattern that we draw on the sand," he told podcast host **Lex Fridman** earlier this year.

Emphasis mine. So weird I even know the guy's name