A price asked, an electrical quantity, and a duty entrusted. All three are something laid on.

How much is achieved for what is spent. Efficiency is only meaningful once you say what was being spent.

The capacity to act, and the cost of acting — a thing this house budgets honestly, in vessels and in windows alike.

Whether a state is pleasant or unpleasant. The first of the three axes a feeling is located on, and the one most often mistaken for the whole.