[arghwhat]

> I am not aware of any evidence in favor of this idea. It seems more likely that the only purpose of the bitter taste is to make you spit the food before swallowing it.

That would not explain why the stomach delays opening in response to bitter in the mouth, similar to preparing for protein digestion on glutamate detection.

But of course, we don't exactly have a spec sheet to work with here, so all we can do is theorize on why a particular trait might have evolved...