I Will Ask You Questions - Now with MORE fantasy ecology!

hello

If a pair of chemicals were discovered that, when synthesized and released into the earth's atmosphere, would make the world's population either more aggressive but more intelligent or more peaceful but less intelligent and you had the power to choose which of the two (or neither) to release, which would you use and why?

Well, smarter but more violent would probably just mean more destructive military science and that's one of my less favourite sciences (I mean, depending I suppose), but even with more peaceful, less smart would mean less cool advanced medical science, and that's my favourite science! So I guess neither would have to be the thing.


Alternatively LET'S THROW UP BOTH AND SEE IF IT RUINS THE WORLD

But the real question is... can we provide answers?