I cannot prove that any of you exist outside my mind. Just like none of you can prove that I exist outside of your minds.
consciousness can be boiled down to this: "me" and "you." In this case, "you" represents anything that cannot be identified as "me." Without "me" there is no "you," as there would be no "me" to even conceive of "you."
So you are all constructs of my mind. This is not where it ends though, as I'm just a construct of the mind of whatever consciousness happens to observe me.
Now. We've established that "you" only are because of "me," and essentially, this reality I exist in exists within me. This is always the part where I get stuck though.
My vocabulary is not advanced enough to speak the language of creation.
Okay, look at it this way: True it's all very circular and dependent on the concept of infinity, but if I exist in a reality that exists within me, and you all exist in a reality that exists within me, and the same can be said of each and every consciousness in existence, then what are we conscious of? We're only conscious of ourselves, nothing else. We are one consciousness, continually segmenting and experiencing itself.