Martin
A monoid in the category of endofunctors
Optimists: The glass is half full
Pessimists: The glass is half empty
Relativists: The glass is half full and half empty
Scientists: Half of the glass' internal volume contains liquid and the other half contains gas
Engineers: The glass is twice as large as it needs to be
Socialists: There isn't enough water to fill the glass
Realists: The glass contains water
Sceptics: The glass does not contain water
Psychics: You have 12 hours to live
Twitch chat: Stay hydrated!
Anime: *ice in water spontaneously clinks against the side of the glass*
Me: *drinks water*
Pessimists: The glass is half empty
Relativists: The glass is half full and half empty
Scientists: Half of the glass' internal volume contains liquid and the other half contains gas
Engineers: The glass is twice as large as it needs to be
Socialists: There isn't enough water to fill the glass
Realists: The glass contains water
Sceptics: The glass does not contain water
Psychics: You have 12 hours to live
Twitch chat: Stay hydrated!
Anime: *ice in water spontaneously clinks against the side of the glass*
Me: *drinks water*