Do you really know why you do what you do?

Studies have shown that if you can get people to see the opposite view and engage in a conversation with themselves, that could actually make them change their views.

We sometimes like things that we have been led to believe we like, explaining away our choices afterwards. This is called choice blindness.

We see ourselves making a choice, & when asked why, we just try to make as much sense of it as possible when making an explanation. But we do this so quickly and with such ease that we think we actually know the answer when we answer why. 

It can make understanding people tricky because when you ask people the question "why", "So why do you support this issue?" "Why do you stay in this job or this relationship?" -- you may actually create an attitude that wasn't there before asking the question.