[Jedi Master Pikachu]

They in this case represented people strewn over a continent, if you are going to include chocolate (Mesoamerica), and popcorn (corn's from Mesoamerica, too, but spread over the eastern part of the United States). Also, both did not have the fattening stuff in them. Amerindian chocolate seems disgusting: it had peppers and was a drink. Popcorn probably wasn't buttered and salted either. Neither were in California.

[Billthedrill]

I'm inclined to believe they invented motion pictures as well. What else would you do with chocolate and popcorn?

Seriously, I do happen to know a little about acorn flour - in old Japan they used to steep them in ponds dug for that purpose. I don't know if the modern Japanese do it the same way but when I lived there my neighbors used to make these weird little unleavened cakes out of the flour, more of a curiosity than actual nutrition. My old landlady told me they'd gather them during WWII to stretch the rice rations. Amazing what you can do if you have to.