Efficiency

Efficiency is a term that is used to talk about how well time on RuneScape is used to gain experience, money, or both.

Efficiency is often used in the context of evaluating two different methods to train a skill, for which their experience per hour and profit per hour rates are known or calculated, based on how valuable you perceive your time to be.

Efficiency cannot take into account enjoyment of the game and therefore a method considered "most efficient" may not necessarily be the preferred method. However, for many players, it would be.