He is extremely productive in its specialty: the intersection of programming language and system programming. I don't think that makes him superhuman.
It's more a model of what a really talented person who applies themselves building things they enjoy building can do.
I prefer thinking of it this way: if Bellard can make a small JS engine from scratch by himself, what's really stoping you from knocking down this library you are thinking about.
He is extremely productive in its specialty: the intersection of programming language and system programming. I don't think that makes him superhuman.
It's more a model of what a really talented person who applies themselves building things they enjoy building can do.
I prefer thinking of it this way: if Bellard can make a small JS engine from scratch by himself, what's really stoping you from knocking down this library you are thinking about.