Light and energy, gravity and inertia; these are material mysteries. We cannot explain them. A mystery is not the same as a puzzle. A puzzle can be figured out. A mystery, in the religious sense, cannot. A mystery cannot be figured out, because it defies figuring. We have literally taken lightening out of the sky and made it to sing, yet in a very real sense, we have no real knowledge of it all.
Sometimes when I am having trouble visualizing something, I find that it is the words themselves that fail me. Perhaps a word is too embedded in a concept that just doesn’t fit. This is especially true of words we use very frequently, but whose concepts are anything but well-understood. “Light”, “energy”, “force”, and “gravity” are [more …]