If youre reading this, you probably exist

I often profess a fondness for the belief that the world exists only for me, and that the existence of other human beings, as well as all other things, is predicated upon my ability to perceive them.

In short, when you leave a room, you no longer exist since I can no longer see you.

This theory, a variation on immaterialism or subjective realism, is not my own. Philosopher George Berkley developed the theory that became immortalized in the dictum, "Esse est percipi" (To be is to be...