The Complexity of Programming Languages

I think one of the biggest is the, the how you map the data, the serialized format to types in the thing. Like that turns out to be a really hard problem. I just saw some Jason recently that put the type information into the Jason, which is a little bit awkward because Jason already has essentially a type system. But then you still have to figure out, all right, the Jason says this thing is a foo. I need afoo in my programming language to map that thing to what if I don't have a bar type? And it's like, no, it's not, but they're just so many factors that are too complicated. That has been kicked down