Yeah it's been decades since I read Rhodes' history about the atom bomb, so I missed the years a bit. My point is that even if we couldn't explain exactly what was happening there was something physically there, and we knew enough about it that Oppenheimer and co. could convince the US Army to build Oak Ridge and many other facilities at massive expense.
We can't say the same about "AI".
LessWrongers find cool reception for translated HPMOR copies sent to Russia's highest IQ youth
https://www.lesswrong.com/posts/onyiPaxnmiDdHn7SR/no-one-has-the-ball-on-1500-russian-olympiad-winners-who-ve