Regarding eating the wrong berries- not sure we're far off that for the majority even if westerners these days. For example, we know things that make us sick (like cesium and strontium isotopes) and keep playing with them. On the other hand (literally) I went to the doctor the other day about a wart on my hand, expecting nitrogen and was prescribed over the counter salicylic acid. From a willow tree.. Maybe the more things change the more they stay the same...
Also, surely the tribe as we have now (bigger, global) should also subscribe to the ethics of smaller tribes and perhaps we wouldn't be in the mess we are in? That is, that taking can't forever be excused by the reason I hear most from the ignorant, that the earth is too big to fail us.
Sustainability was and is key to the oldest tribes. Losing real connection to our natural world means we also inadvertently lose our connection to what that means. We think we conquered nature but we actually just turned our back on it and by doing so are destroying it (not the same thing).
I'm not into the ideas of mysticism at all to explain nature btw- I don't think we should forever oscillate between what we should to worship, but rather start using common sense. That can articulate into scientific observation, laws etc, or it can remain as mere common sense. At the moment though, it seems fewer and fewer have either, certainly no one in any position of power.
Best old world hierarchies were the anarchic ones. But at least those with tribal leaders, rules and punishments had a common sense knowledge of the environment they lived in. Human history of course replete with examples that show when humans lose their direct connection to the environment in its natural state, they over reach.
I don't think we will go backward (before we go under), but I do think we could do with some humility to reexamine our destructive approach and the pervading beliefs that technology in the modern sense will overcome. I have a son already of the deep seated belief that leaving earth to #### up some other planet is the solution, before he's properly learnt about this one, such is the hubris of the society we live in. To get anywhere meaningful, I think we need to start playing in the dirt again, as a society, not just odd individuals. But Not even farmers do that these days.