london based designer alex ostrowski created this glass to subvert the debate to
whether the glass of water is half-full or half-empty. as the popular proverb reveals,
optimistic people perceive a glass containing 50% of its potential contents as 'half full',
whereas pessimistic people consider it 'half empty'. ostrowski wanted to realize this
half empty/full glass, using a normal glass and some clear resin. the glass remains
functional but holds 50% less fluid. the drinker is thus confronted with their optimistic
or pessimistic viewpoint with every sip.

http://www.alexostrowski.com