[BevvyB]

Yes, I want ONLY, not 'as well as things that take less time than that' :)

Regarding energy, I hear you. However, it's a bit of both and the system needs to be flexible enough to allow us to work with energy the way we want. Sorting through some of my clothes is low energy, but would take me about five hours, making it high energy.

There is energy you have now, and energy things take, and there is a difference in the energy some things takes depending on the state of mind you're in! Walking the dog after I've just been to the shops uses less energy relatively speaking than after I've just got up and haven't had my first coffee yet.

Regardless of all that, whatever OF does about energy it should be flexible.