> The real question is, can you learn to do it before you starve or freeze to death? Or perhaps poison yourself because you ate something you shouldn't or cooked it badly.
You can eat some real terrible stuff and like 99.999% of the time only get the shits, which isn't really a concern if you have good access to clean drinking water and can stay hydrated.
The overwhelming majority of people probably would figure it out even if they wind up eating a lot of questionable stuff in the first month and productivity in other areas would dedicate more resources to it.
You're not going to be any good for hunting, farming or keeping warm if you have the shits though.