Vision and emotions could be similar: it feels like they are experiences that are derived from our environment, but several scientific subjects and experiments suggest they are not. Rather, they seem to be experiences that are entirely constructed in our minds.

This idea is both interesting and disturbing to me.

If this is true, does it suggest that there is no source of certainty?

And if so, how do we respond to those who act with certainty? Whether they be religious fundamentalists or scientific authorities, true certainty seems to be something that rightly is denied us.

How can we deal with this?