I was walking to main campus.
I'm sure normal people aren't just walking along, minding their own business, then get suddenly interrupted by the thought of
"Was that a real voice, or not?" followed rapidly by a lengthy tangent with a thesis of "What is real anyway?" and ending with "If a tree craps in the woods does anyone hear it?"
WHAT? What the fuck is that?
...and after thinking about thinking, I got caught in this metaphorical never-ending mobius strip type attack of thinking about thinking about thinking...
Then I realized I had to cross the street.
The light was in my favour, I think.