Oddly instead of being depressing, I find this meditation on reality to be unusually wise and calming. Reminds me of what my mom used to tell me in middle school when I'd kvetch about a bad hair day: 'In a hundred years, El, who is going to care?"
Error 404 (Not Found)!!1 (http://www.youtube.com/watch?v=4Tm6Z1y3h94#)
Existentialism 101.
This idea really hit me powerfully as a spiritual experience in my early 20s. I remember it well. I know of these concepts before, of course, but one night they really came alive in a euphoric epiphany that likely changed the course of my life.