The ability to do work- energy. Is that it? “Canness” to do work? Ability? As in being able? Ability, the abstract noun? Does that imply energy too is abstract? An abstract noun can only be observed with no interaction with the five senses- sight, smell, sound, feel or taste. What powers these senses or organs to even do their “work”? Did someone just answer some form of chemical energy stored in the nervous system? Hmmm…
Well, no intention to stir an argument for or against the “abstractness” of energy. This is simply a pointer; there’s so much to the word energy when you think about it. Able to think of a world or your world without energy? I guess not! You even needed the ability to do the work of thinking- creative energy.
In short, the idea is… think energy, think ability.