Repeat after me: hypothesis

I have a theory that a butterfly is actually a pegasus that flew too high and died of asphyxiation and then was reborn as a caterpillar.

In short, if it is “just a theory”, then it’s not a theory at all. It might be a hypothesis, or a hunch, or a guess, or sometimes even a conjecture. But certainly not a theory.

And, for the record, evolution is /not/ “just a theory”. It’s well-substantiated, well-supported, and well-documented, explaining scientific observations. I.e. a theory.

Just sayin’.