Nature HATES you. It is beautiful, magnificent and utterly capricious - inured to cries of mercy, fairness or justice. If you have ever been camping or in a f

Nature HATES you. It is beautiful, magnificent and utterly capricious - inured to cries of mercy, fairness or justice. If you have ever been camping or in a forest or walked through shrubland this fact will be made abundantly clear to you. Immobile things like plants have edged leaves, burrs and seeds to sink deep into furs, thorns to prevent casual damage, let alone poisons and allergens. Forget mention of the thousands of insects and their colonies. The environment is inimical to today's civilized primates we call man. Hunting IS difficult, as is building tools without things like muscle force multipliers. Sharp edges? Want to beat stones together to get edges? Or do you want to move up to the Iron age? Now you have the option of living long enough to die of dysentery. What you further ignore is that even accrued tribal knowledge is slowly lost if populations don't achieve a certain concentration. Imagine rediscovering the "art" of smithing, only to lose it by the third generation. Whats dangerous in that society isn't the sharp edges, its the lack of anything else. Sick? Can't hunt? Good luck. Artery sliced open? Sepsis? Need antibiotics? Lets hope the witch doctor has good juju.