Rationalty, in my dictionary, is not an attribute of human beings, it is simply a coping method, a skill, if you will. Very much like the speed at which a cheetah runs, or a pack of lionesses hunt down their preys. We use rational thought processes in order to solve problems, but we are not rational in the sense that it sets us apart from other animals.

To say it differently: rationality is an overrated aspect of human beings. We think it is the answer to all our problems, but it isn't.

As far of my usage of Te: like I said, I use it to change light bulbs, or program web sites and stuff, but beyond that, I have no use for it. Been there, done that, it doesn't work (at least, it doesn't for me).