The intellectual I dont so much care about.
The emotions are what sets us a part, and also makes us a part of something bigger.
The emotions make intent that much easier to create, all be it sometimes a little clouded, in the negative ones.
I think they power the planet.
Wonder if, say 25,000 years ago, the same study was done, and they said the same thing? Dont worry, we'll build these huge pyramid structures, and build in to them all the clues and information we need to remember how smart we were. In the future they will see them and remember, trust me...
EDIT - to see where the study eventually takes us, watch the move "Idiocracy"... and have a big glass of Brawndo handy. LOL
EDIT x 2 - haha, as silly as that flick was, the answer was - 'water'.