I find it odd that everyone is presenting the analogy as “humans is to understanding the final theory as dogs is to understanding calculus.” Why not just use “t

I find it odd that everyone is presenting the analogy as “humans is to understanding the final theory as dogs is to understanding calculus.” Why not just use “the final theory” for both second terms? In other words, do we expect a dog to ever understand the final theory of physics? Surely not. Do we expect a 2 year old human to ever understand the final theory of physics? Still, presumably not.