I think we are starting to mix two separate things here and it is important to keep them separate.
Originally Posted by chezlaw
The brain makes decisions based on inputs and what you expect is a huge input
1. Actions influenced by predetermined expectations.
chezlaw's taste test was a perfect example of this. What people think they taste will be greatly influenced by what they expect to taste. And thoughts and actions are often influenced more by ones expectation than their information and experience.
2. Actions influenced by desires.
Have you ever walked up to the refrigerator and opened it to look for food when you know there isn't any food in it just because you are hungry and really wish (desire) there was something you wanted to eat inside? That's not a case of predetermined expectation
influencing your actions (you didn't expect to find anything), but rather your emotional brain taking over and only caring about what you want.