I wish people would stop saying "JavaScript was written in 10 days" with the subtle implication that this is somehow shoddy or half-arsed. GvR wrote the first version of Python in a month in December 1989; the first bit of C was made out of B and NB in a month or two in ~1970. Every single bit of software you've ever used that isn't some enterprise nightmare was first a proof of concept hacked together in a couple of weeks by whoever first did it. This is entirely normal; it's not a bad thing!
@sil Don't they say designed, rather than written? In any case, I think the interesting part of that story is "... because he thought he was going to be implementing Scheme, but then Marketing said it had to look like Java", and we have to try to imagine a world where we're all Lisp programmers, VSCode is considered a straight-up Emacs rip-off, etc.
@mavit @sil The language they were aiming for was Self, not Scheme.