hmmm, maybe this is getting a little too complicated for its own good. I don't understand much/anything about quantum physics, although isn't it a probability thing, in that at a given time it can be probable that it is empty but more likely isn't going to be?
anyway, empty also means to become devoid of contents. Now the content in question is this mysterious liquid, so for a glass to be empty it must mot have any of it in it (although other stuff, like air is present, so not neccessarily a vacuum). So that is also a contradiction of the meaning of empty, hence illogical etc.
Although thats where the idea might be coming from, in that pessimistic people always reduce something to nothing... i guess?
just the actual term is illogical, to me. Maybe i just worked it out though
hmmm i hope this disscussion doesn't lead to, too complicated or profound things like what is real or something. It's already getting away a bit with the discussion of quantum physics....