I have been thinking about this lately, and it seems to me that it can't be possible for "tonewood" to make a difference in the sound of an instrument. The reason I say this is because pickups just sense the vibration of your strings and output the signal to your amp. I don't know too much about physics, but how in the world could wood change the vibration of your strings? Or to put it another way how could pickups be affected by something that isn't metallic. (They only can "sense" the vibration of metal right?) Any thoughts?