Mind Control

I was listening to one of my favorite songs yesterday while I was driving and realized that the last time I'd heard that song I was driving in the same place. Why in the world would I remember something like that? What possible purpose could retaining where you heard a song have? What biological imperative is served by retaining your song hearing location. Did this somehow cause my ancestors to flourish while others died out?

Actually, I've come up with something. I remember that last time I was so into the song I took a curve too quickly and ended up swerving around a little. So was it some 5ht degree survival instinct? Hard to know.

And referring back to something a said a few days ago, if you think you're in control of your brain, how come that song's been stuck in your head for hours now?