All pictures are taken from TEDxTartu 2014 Facebook album
First of all, I like that they determine talks by speakers, not by topics. There is no titles in program, there are only names (plus description of the talk is available in web). More I participate in different conference more I am convinced that this is better approach.
Loor asked some people to draw rationality and showed us some drawings. I really liked this one (in my reproduction):
It's like there is the Truth and you just moving in right direction.
One more good visualization of difficult thing (in my reproductions again):