Hmmm. I disagree with this statement. If, as a thinker, you can understand how the person feels about a thing then you can guess about their reaction to the stimuli. This just requires more "internal debuuging", that's all. For instance, if Joe gets a new assignment at work and is upset, it might seem irrational to a thinker at first; however, if we consider that Joe is a Linux zealot and his assignment is to write a Winows 2000 website, then his unhappiness might not seem irrational after all. We can simply assign his attribute as a Linux zealot to another one of the "input channels" to analyze.
-SM