Is there any evidence that reality (as we perceive it) exists outside our perception?

The assumption of an external reality (sometimes called a consensus reality) is the assumption that there is a real world that is external to our mind and senses, and that it exists whether or not we as observers exist, and whether or not we are observing it. It is one we all commonly make without even thinking about it.

But what do we really know? We assume the duality of me/not-me, but in order to prove the existence of the not-me we rely upon information from the very same not-me that we are questioning.

Inspired by this question. Thanks, Keith!