This is all very random. But I thought it was quite interesting, so anyway.
Everyone's familiar with the "Ash-is-in-a-coma-and-dreaming-and-all-of-that-and-hurts-your-feels-real-real-reaaaally-bad-especially-if-you've-followed-from-season-1-to-the-current-one-and-watched-all-the-movies" theory right?
Well, what if Pokémon was post-apocalyptic totally not like Adventure Time?
Nuclear radiation could have caused mutation in animals to create Pokémon.
And that could explain the advanced tech found around. :3
There's another creepypasta thing out there similar to the coma one that chronicles a timeline from a nuclear disaster that caused most animal life to mutate up until a certain ten-year-old boy starts his Pokemon journey. Want me to try and find it?