In Genesis, Adam is condemned to toil on the earth and to eat bread for all of his life. Do you think this is literally true in the sense of referring to human bread made out of grains and grasses? If so, wouldn't it imply that cavemen never existed? It seems like the consensus is that early humans (according to natural science) were big meat-eaters and certainly did not have ready access to agriculture. Note that I'm talking about human history here, not evolution.