If you want to master something, teach it. The more you teach, the better you learn. Teaching is a powerful tool to learning. - Richard Feynman

Light is something like raindrops — each little lump of light is called a photon — and if the light is all one color, all the "raindrops" are the same.

"More was discovered about the electrical force. The natural interpretation
of electrical interaction is that two objects simply attract each other: plus against
minus. However, this was discovered to be an inadequate idea to represent it.
A more adequate representation of the situation is to say that the existence of the
positive charge, in some sense, distorts, or creates a "condition" in space, so that
when we put the negative charge in, it feels a force. This potentiality for produc-
ing a force is called an electric field."

We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. But there are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.