Definition
Presumption means assuming something is true without having proof, or behaving with excessive confidence. It's like jumping to conclusions before you have all the facts. Unlike a hypothesis, a presumption is often acted upon as if it were a certainty. There's a fine line between confidence and presumption; the latter often involves overstepping boundaries. It can also refer to an assumption that is accepted as true unless proven otherwise. Think of it as starting a race already believing you've won.