Imagine if every state had their own completely different traffic rules, and you had to be licensed in every state in order to drive there. E.g. In one state you had to drive on the left hand side but only on Tuesdays, Thursdays and Saturdays. In another state, it cost too much to put up traffic signs and signals, so, all drivers had to stop at all intersections unless you were going in a North or South direction.

One aspect is that it would make an interesting situation at the borders between states. And that's kinda sorta what we have now with programming languages.

> Stuff on top of stuff on top of stuff.

Couldn't that also be too many choices? Like if you specialize in JS instead of C, you're not going to have all the knowledge a C expert might know. Instead of utilizing proven, existing C libraries, you're going to write stuff from scratch in JS?