With respect, how should I think about them? Just dream up whatever I want? Okay. My Paleolithic people ate mostly fish, and supplemented with breadfruit and coconuts. Is that right? You don't have any idea, because you weren't there.
Also, WHICH Paleolithic people? I must imagine that those people ate varied diets that were contingent on their locality. People on the tundra would maybe not be eating so many nuts.
Encouraging people to construct their diet by imagining the past is a useless exercise.
You do not have to positively identify what they ate so much as identify what they did not eat. They did not eat canned food, microwave meals or McDonalds or soda/chips.
Also, WHICH Paleolithic people? I must imagine that those people ate varied diets that were contingent on their locality. People on the tundra would maybe not be eating so many nuts.
Encouraging people to construct their diet by imagining the past is a useless exercise.