Sorry for taking so long getting back to this thread. I wanted to do a lot more research and come back with more confidence. I'll discuss my current thoughts now.
I think the reason mass is multiplied by the speed of light (as opposed to the speed of sound or some other variable) is because...
Another thought I had that might help me understand this, what does Einstein mean by "energy"? Energy is defined different based on type (kinetic, potential, mechanical, electric, etcetera). I read his paper but he refers to it mostly in general.
I see, so would it be more accurate to say...
I know E=mc2 essentially means energy = mass. One might think why not just say E = m?
But I also know that: Every object travels through space and time at the speed of light.
So now one might think why not just E=mc? That's essentially where I'm stuck at now. I'm not sure why it's...