Yeah, but since certain ideas like E are mathematically derived concepts, they have an intangible essence to them, like in string theory. Not saying it's not useful to use the concept as a tool, but I'm talking more philosophically.
You keep saying that, but have yet to justify it. And string theory isn't a theory, despite the name - it's a conjecture with possible promise. It's never been actually employed for anything, as a result, and can't yet - unlike the concept of energy.
think like the idea that death is the end of consciousness. I point to NDE as one example. So then the spirit is useful for describing that which is you that remains and travels on.....
NDEs aren't an example of what you're looking for. And look at my editing of this quote - this is what is evident from your positions. When pressed, you've got nothing except a desire. Desires are fine, but don't pretend they affect reality. It can be dangerous.
Example: I don't like the idea that I'm going to probably get colon cancer in a couple of decades (family history). Doesn't mean I should look for evidence for why I won't, and pay preferential attention to it. I mean, I could convince myself I won't get colon cancer, if I want to. But is it a good idea? Is it honest, with myself? Is it safe
Convincing yourself that there's an afterlife is similar. It devalues the present life. Logically, dying is less of a big deal when there's a life that continues afterward. So risking death is more attractive, and wasting years is more okay, etc.