[ckissick]

I've noticed something weird. Using bar chords only, play G then F, then D-sharp, then D. It's a progression of progressively lower sounds. Yet when you go from F to D-sharp, your finger that's creating the bar goes from the 1st fret to the 8th fret. Every string is pressed at a much higher fret, yet it sounds like a lower note. Instead of an optical illusion, it's an auditory allusion. How does this work?