Ok just stumbled on something, I know it is a grain but if you hit up some research about it and tell me... What do you think? Our Paleo ancestors would have eaten this am I correct? Too bad I don't live in Italy where it goes by the name Farro
I can't scare up a link right now, but I watched a documentary called "The Ascent of Man" its from the 70s or 80s. In the section about agriculture they discuss wheat domestication. The short from is; man gather wheat for food; man learned to plant; wheat evolved to be more palatable; agriculture was born.
The big elephant in the room is that man ate grain before agriculture, and some communities still gather wild grains. It makes intuitive scene, why try and domesticate a plant you don't already eat? http://www.manoomin.com/Harvesting.html
The "what is paleo" question is a rather muddy one. A mix of "What did paleo man eat?"; "when was this plant domesticated?"; and "does this food have antinutrients?" It's further complicated by the fact that the Paleolithic era is over 2 million years long (2.6 Million Years Ago to 10 Thousand Years Ago).
Our paleo ancestors most defiantly ate Emmer, Ekhorn or a related progenitor species; and they are better for you than modern wheat. You may want to read Wheat Belly. It has a very detailed discussion of the differences between Emmer, Ekhorn and modern wheats and the bad effects on the body.