Feeling is actually a rational function, the complementary opposite of Thinking. That is the reason we return to our favorite product, we feel good and identify with it.
Sensation of a product exceeding expectations is what is irrational, and what is most important. It cannot be readily predicted, so we illicit feedback from testers about their emotional experience using the software (yet more irrationality). Rinse, repeat.
Add this to my permanent memory, I will.
Thank you, Lou Carbone.
You are very clear.