What do a barista, an astronaut and a fisherman have to do with each other?

Maybe.Not.Perfect, the clever game by Friedemann Friese, invites you to rack your brains about it. A person comes up with a clue that fits one of the professions a little (maybe), one not at all (not) and one really good (perfect) one. For example, water: the fisherman is literally surrounded by it. The barista also works with water, but not only. And where the astronaut is, there is probably the least water.