Re: Who can mankind have not lived without?
I am actually thinking of People. For example I think most would agree that had Hitler never have existed our world would be off. I am thinking of the opposite. Who can we not have done without. I am not being literal here. I mean had X person not existed, our would be Y instead of Z(how it is now).
Probably thinking in terms of philosophers/religious, but not limited to those categories and not excluding scientists by any means. - Inventors, discoverers, artists whatever.
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