[animal531]

CPU's are really funny and interesting things. Us programmers work with them daily and make so many assumptions about them, as well as the whole code chain from the compiler, runtimes, how code works when it comes to loops, methods etc., you name it.

I've been working on my own Entity Component System in C# and basically had to start from the ground up and test every assumption possible. There have only really been a few instances where my gut was correct, more often than not there are so many surprising gotchas hidden everywhere.

[yusina]

It's because they are providing abstractions which we/the compilers use, but just doing that would be too slow, so they implement optimizations, but those are based on certain assumptions, so then the users adjust what they do to match those assumptions well, so the optimizations have now leaked into the API, and after many rounds of doing this for decades, you end up with this terrible mess we are in.