How science sees the world

Well technically the metaphor refers to H2O alone.

Well the glass is also matter in itself so if you put it that way, is the glass really there at all? Is the world half full should be the question? Why do cats always land feet first? Why do we exist? What is the meaning of life? How is it we haven't discovered intelligent life elsewhere yet? Are there other things in the universe? Are we alone in the universe? What would be more terrifying? Are there other universes?

Like a bag of chips.

I think if the glass is being filled, it is half full. If it is being emptied, it is half empty.

...This might be in better use if I'm actually good in science, which I am not. Then again, it says try, so...