I think about the same question all the time. Instead of can't change, I think human mind is more of a slippery slope of ideas, an overton window. If you try to

I think about the same question all the time. Instead of can't change, I think human mind is more of a slippery slope of ideas, an overton window. If you try to transmit an idea that is on the far end of that slope, it would appear no exchange has taken place. But that slope is different among a population. If you managed to transmit the same idea to a bunch of people, some will get what you are trying to convey. I believe ideas are better broadcasted and people do change, albeit slowly.