A physicist and an engineer are in a hot-air balloon. They've been drifting for hours and have no idea where they are. All the sheep in Scotland are black. All we know is that there are SOME black sheep in Scotland. All we really know is that there are SOME sheep in Scotland that are black on at least one side.
Decimals have a point.
Analysis takes it to the limit. Trigonometry is a sine of the times. Now you secant, now you don't.