The normal threshold for belief/knowledge is reliable, repeatable, observable events. When something is reliable, our brain creates a feeling of certitude that marks such events as 'knowledge'. This seeps into our subconscious and we can then act on that knowledge with confidence, and eventually, without even thinking about it.
However, the brain's threshold can be screwed up by mental illness or brain washing etc.
Pyschologist Valerie Tarico has a good video on this:
http://www.youtube.com/watch?v=ZNjnD7QMB8Y
However, the brain's threshold can be screwed up by mental illness or brain washing etc.
Pyschologist Valerie Tarico has a good video on this:
http://www.youtube.com/watch?v=ZNjnD7QMB8Y
