Thanks, I'll keep that in mind.

I realised, just recently, that that article I linked to does actually have more connection to diet than I'd thought. After all, there is one  viewpoint within the (cooked) Palaeolithic Diet that states that we should only eat foods that were available  in the Palaeolithic era, and that even then we should only eat those palaeo foods originating in the Old World,  since the New World(North and South America) wasn't supposedly discovered until around the Mesolithic period. However, if humans were already over there right into the Palaeolithic era, then  it's presumably fine to eat potatoes and other new world foods.

Geoff