If they really want to learn there are enough evidence. The problem is that they don't want to due to ideological reasons or political reasons or philosophical sunk cost or just peer pressure and following the crowd. You can't wake of those who pretend to sleep.

if the whole world thought they'd rather stick with Netflix than fight a bloody war, at that point we will have created world peace. It's as simple as that. One could join a military and go on international adventures whether it is Vietnam or Middle East and return with a one less limb and a lot of PTSD while some coward sit infront of a TV with a controller playing Super Mario. But if there were more people playing Super Mario, we can resurrect, Genghis Khan, Hitler, Pol Pot, Idi Amin and a few more and elect them as the leaders of global super powers and we still wouldn't have genocides or holocausts or mass murder and rape with destruction of property.
https://steemit.com/ecotrain/@vimukthi/imagine-there-was-a-war-and-everybody-would-rather-watch-netflix?sort=author_reputation

Trade itself is the opposite of war. You can either gain things through coercion/plunder or you can trade voluntarily. There is no third way. Henry Hazlitt wrote well about this here.