lol - everything you say is right and eloquently stated!

My over-simplified version would just say “precise communication of even moderately complex facts is incredibly hard”.

And that’s human to human communication, of which system to system communication is arguably just an implementation.

Arguably even communicating with ourselves over stretches of time is non-trivial as experienced by anyone who has ever found a paper note or maybe a comment in code by one’s younger self only to scratch our head and wonder “wtf did I mean by that?”