"Observer" is the most unfortunate word physicists could have chosen, though. It gets people all confused about observation mistakenly having something to do wi

"Observer" is the most unfortunate word physicists could have chosen, though. It gets people all confused about observation mistakenly having something to do with thinking or perception. "Interacter" would have been a more accurate term, but it doesn't sound as sexy. To wit, yes, the tree makes a sound because the tree is there to hear it.