angry bob said:Right ... but the original point was that an atom isn't physical because no one can sense it.
So for your analogy of the tv ... everyone must be blind with no sense of touch for the tv to not be physical.
Right. But what if everyone was blind and I invented a robot (call him Geoff for the sake of argument) that can detect a muted TV, and could communicate this information to us blind folk. By Phils reckoning the TV still physically doesn't exist, because (going back to his atoms) atoms don't exist because you can't see them directly, you need some sense-heightening equipment (Geoff) to see them.
I wonder if Phil wears glasses, if he does then there's an awful lot of things that aren't physical.