The brain knows more than it can provide to language and perception is only a subjective conscious construct!
- Thus, one needs to watch the brain at work to fully understand how humans think, decide and plan their behaviors -
The brain processes information to produce adapted behavior. It is largely speechless, which is why one needs to watch it at work. Also, perception is nothing more than a concscious construct of our psyche and, because the brain knows more than it admits to consciousness, getting access to that knowledge gives you a more complete picture of how humans work! Interesting, isn't it?
..... those three fields ensure a most complete and holistic view and understanding!