no, cause then that leads to stagnation and no further development. while maybe not EVERYONE thought the earth was flata nd you would sail straight off the edge if you went to far, most people did, or at the very least few people were vocal enough to ***** about it despite the crazy label getting stamped down.
So no. progress means difference, just as evolution means change. if you halt that difference/change, you halt the entire process and basically just fuck up the pudding.
and ebfore you say that thats not true and we would all work to better the world technologically, just remember this.
We used to think that for the common cold, the best thing to do was go into a frigid dirty pond and have blood sucking leeches just latch on. and that the best way to deal with infection was to leave it alone or just cut off your body part. or that if you werent white/European you were an object.
today, we have things like penicillin, antibodies, and freedom (or relative freedom as to comparison to what it was back then in the more developed nations).
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Plus theres the ethical questions like "what happens if someone thinks differently (do you kill them cause they may cause trouble, banish them to near certain death, or just leave them alone and everyone thinks they're mad)", "what thoughts are the ones that will be chosen as right (capitalism or communism, the racist vs the non racist, religion vs non religion, which religion in general is right, equal rights for all vs fuck em they're not like me, do we raise the retard/lame/disfigured/challenged or should we just spartan that shit and leave them for the wolves)", "is life really worth living if there is no difference or uniqueness (if my opinion is the same as everyone else, would I even know I exist, and could I say it was a good life when it was a life chosen for me)"
it also leads to the question of why you would need everyone. theres no change, so everoyne is basically the same person, just in a different physical body. So in the end would it really matter if there was 7 billion of us or just one?