Will the true Paleo Diet please stand up?

What is the authentic Paleo Diet? Myriad interpretations, diverse rules, and disagreements surround the oldest diet on the planet. Other "Paleo experts" relax the rules to the point where we lose the benefits altogether. Perhaps the whole point of Paleo is to be inspired by our ancestral diet, to take the positive points as wisdom and leave the rest. Many people ask me questions: What kind of flour should I use? Are sweeteners that raise blood sugar Paleo-approved? Why aren't grains and legumes ...