Last March, in a quiet room in Brussels, I placed a green apple beside a blank card. The card said “window.” Nothing changed, except the room became briefly argumentative; the object remained itself while the sentence asked us to make a mistake.
A caption is a small act of doubt
Good interfaces understand this pause. A button marked “continue” is never only a rectangle; it is a promise, a direction, and sometimes a polite refusal. We build better pages when the label leaves a little air around the thing.