Are you a domestic terrorist?

[Vandiablo]

I have exhaustively researched this issue, and it seems that the solution is to wear a blindfold while you are drinking.

The only drawback is that your glass will be both full and empty at the same time

Also note that using your lips to observe the level will change the level!

and your cat might die.

Only if it's in a box. And if the capacity of the box is two live cats, then your box may or may not be half full or may or may not be half empty.

Besides, the cat will die. It's only a matter of time.

(Especially if there are no holes in the box.)