3 ms·Gee, [1] says they were invented by Wittgenstein! I never knew about that.by yesenadam 6y agoGee, [1] says they were invented by Wittgenstein! I never knew about that.lostlogin 6y ago“ If people never did silly things nothing intelligent would ever get done”yesenadam 6y agoI don't see the point of putting that quote here, sorry. Inventing the helicopter was a silly thing, or what?..