It wouldn't change things - there'd still be morons like trump, that brazilian guy, leading the world's countries.
You'd still have hatred and killing over things as silly as skin colour, ethnicity, different Ideologies, religion.
Spend some time in the war room and you'll see humanity - no matter how much knowledge obtained - will always have a large population that claims enlightenment but are nothing more than educated (in some cases) POS who'd kill you in second if allowed (or if they president says to in so many words).