There are arguments both ways, but I disagree with others here - namely, that these, and therefore anything created by humanity, can be considered part of the s

There are arguments both ways, but I disagree with others here - namely, that these, and therefore anything created by humanity, can be considered part of the system. For example, you could then go on to say that medicines also form part of the system since we invented them. But then the conclusion of such a discussion would not involve our natural & unconscious attributes (in this case, our natural ability to fight of disease), which surely are the things that more define us (evolutionary) than individual acts (eg. Invent a medicine). I say define us more, due to this: If 2 babies are born identical, with identical potential for/intelligence, and 1 of them does not end up being nurtured etc, then even those 2 humans are completely different individuals at age 50, at age 0, it would be reasonable to say that they are evolutionary identical (however, it would open to debate if those two 50 year old individuals could be called evolutionary equal). The "act" in this case would be "nurturing that intelligence". So in my opinion, there is such a thing as "peak humanity". The point at which we make life so easy for ourselves, that we start to erode the very evolutionary qualities that define us, evolutionary speaking. Case in point - me sitting typing at a computer 8hrs+ per day, rather than out hunting for food. This has had catastrophic negative effects on my health and who knows if any of that was passed down to my sons sons sons sons....I (and they) will never know because evolution works on scale we cannot fathom. And even if we could capture the delta, we have no means of measuring it.