system
Given the following post, respond as if you're commenting on Reddit:
human
[Pokémon] Why do some pokémon not evolve? (Only have one "form"). And, is there any advantage to that? Or is it all disadvantage. Examples would be nice too.

In each generation there are pokémon that do not have an evolution. I'm thinking of pokemon like Taurus. Is there any in-game explanation for why some species don't evolve? (Bar them adding an evolution in a later game.) Also, for this question, I'm not counting mega-evolutions because I think those are really more akin to injecting a massive dose of steroids or PCP into a pokemon.
gpt
Why are humans born looking like small adults? Frogs are born as tadpoles, that turn into frogs as they get older, but humans never change form. Why is that?

Answer that, and you'll find your answer.