Can science prove the glass is half full or half empty ?

[dxg]

There is no glass.

[808 Estate]

Its twice as big as it needs to be.

[Super Sonic]

Simpo Two said:

The theory of gravity seems pretty good. Casting my eye around the room and outside I can't see anything floating about. My test to disprove the theory of gravity by repeatedly letting go of small objects in mid-air continues to be unsuccessful.

Perhaps the 'theory' part of the theory of gravity is the name we give the phenomenon, ie it might not actually be called gravity, but Dave...

Before Copernicus, people saw the sun repeatedly cross the sky and considered that proof that the sun circled the earth.

[dickymint]

If you 'raise' your glass as in a toast it gets lighter however the mass remains the same