I can't. It's not based on any methodology. It is, however, based on a goal: playing as easy as possible. Once that becomes the goal, you look for solutions and improvements. If a solution can't be found that makes it easier, you abandon it for something else.
There are some general principles, however.
1. Never press down because once you kit the key bed, you press against yourself which wastes energy and stops momentum. This applies to octaves, chords, and the like. Another way to say it is no "Gravity Drops", which is something that a lot of technique books describe.
2. The piano isn't the instrument - You are. This directly relates to making it as easy as possible since you free yourself from enslavement of the piano's mechanics, which you cannot control. The only thing you can control is the mechanics of your own body.
It took me years to figure out, but I can teach it to someone quite quickly. Again, it's not based on any method, just being attuned to the feedback that your body is always providing. If it's easier, it's not good enough. You must find the easiest way.