They stayed here and built rocket ships that took us to the moon and built (as of yet still unmatched) mammoth aircraft carriers that can single handedly sink entire navies.
The stereotype that Americans aren't smart is just a ruse so don't fall for it! Or better yet do fall for it, lol.
you know, that dude that was crashing so many planes all over the place that they eventually agreed on giving him something to fly that he wouldn't need to land anyway.