In terms of philosophy and science fiction energy is anything you imagine it to be.
Not really. Energy is the ability to do work; That is, to accelerate a mass, or to lift it against the acceleration due to the local gravitational field. It's a force applied over a distance.
I think they ignore gravity to much.
Who is ignoring gravity ?
And time is an issue. I don't think its a dimension.
Well, you're in good company, Newton was a deadset genius, and he made the exact same mistake. And it's such a minor mistake that nobody noticed for almost three hundred years, and even then only because some nerds wanted to achieve incredible precision in their predictions of the orbit of Mercury.
dt is a math trick to me.
Well any change in any quantity could be viewed that way. But it has real, measurable consequences - so it's clearly more than
just a math trick.
But then again, I dont know what I dont know. I just know its a lot.
You, and every other person who has ever lived.