Why a water level says more than a number

"7 slots free" is an honest statement, but not a useful one. Seven out of eight means the day is practically empty. Seven out of sixty means it is booked out. The number alone says nothing.

So Terminy shows a vessel instead. The fill level is the proportion, not the amount — and the eye reads proportions instantly, without arithmetic and without reading the label.

The exact number is still right beside it. Anyone who needs it finds it; anyone just looking for a slot sees at a glance where clicking is worth it.