Folk Psychology:

"Folk psychology is 'what everyone knows' about their minds and the minds of others: people can feel pain or be hungry or thirsty and know the difference, they can remember events from their past, anticipate lots of things, see what is in front of their open eyes, hear what is said within earshot, deceive and be deceived, know where they are, recognize others, and so forth. The confidence with which we make these assumptions is breathtaking, given how little we know about what is actually going on inside the heads of these people (to say nothing of other animals). So sure are we about all this that it takes some strenuous distancing even to notice that we’re doing it."

Daniel C. Dennett