Very interesting read, thanks YC! I went about my day was pondering the whole hunter-gathering way of life. In the way back when, there were no guide books on what to eat, learning not to eat that particular plant must have come at a cost. Once the knowledge had been learned it must have become part of the tribal lore, not to be lost or forgotten. It's common now to sneer at "old wives tales" but really, that's what the wisdom of what to eat or not consisted of and how it was handed down to the next generation.
I can almost see a division of labor/responsibility where the women did indeed keep everybody safe from eating the wrong foods.
When we are having storms here and I and the dogs hole up for the day, we spend the time reading and snacking from the kitchen. They snack more than they read but it's a team effort. Along with a fresh pot of tea, I'm surprised how well we can clean out the icebox of any leftovers. Thinking back to the way back when: what ever provisions had been stored up against the winter, it would have been so easy to munch them all up without somebody watching the larder. I wonder if that was where we got started on mathematics.
I can imagine three or four elder women (maybe in their thirties) trying to get a handle on how long winter was and how to apportion out the food to make it last.
Anyways, had fun thinking about all this.
Best Wishes, Rob
P.S. PPines, I really like your words " died of a cascade of marginal decisions." Something to ponder and take to heart.