This is such a naive understanding of human history. The defining breaking point between the Homo genus and our ape ancestors is tool use 1-2 million years ago.

This is such a naive understanding of human history. The defining breaking point between the Homo genus and our ape ancestors is tool use 1-2 million years ago. Those tools (and our subsequent use of fire) enabled us to dramatically reduce the size of our digestive tract. We get more energy from our food and spend less resources to digest it because of cooking, a technology. We have thus evolved wherein we are not capable of surviving on an entirely non cooked diet that we would gather ourselves (the energy input to gather the food plus the energy to digest the raw food is too high -- cooking makes it feasible with our technologically adapted digestive tract). Yet no one worries about us going extinct if we were to lose access to fire or cooking utensils -- because we can recreate them with ease. Thus, the concern shouldn't be dependence on a technology but on the ease of us losing that technology. Nonetheless, I agree that this technology is much easier to lose than fire or cooking knowledge.