The hunter-gatherer foods that people on the paleo diet reclaim as 'good' foods largely consists of fruits, vegetables, fish, meat, eggs. fungi and nuts - things that, hypothetically, pre-agricultural communities lived on. This means the exclusion of grains, potatoes, legumes, sugar and dairy, or anything else that has to be farmed.
As we veer into an age of hyper-awareness, the ethics of how we use such knowledge is more pertinent than ever. Otherwise we may be faced with a future where courtship involves clubbing each other over the head (verbally known as NLP), whilst sipping green smoothies laced with our 21st Century love-potions.