I want to continue the discussion on intensity. Where does it come from? I submit that intensity is the result of FOCUS. When I was a child, I guess I had a cruel streak or at the very least an insensitive streak. On a lazy summer afternoon, we would grab a magnifying glass and go looking for ants.

Some of you already know where I am going with this. We would find some slow moving ant near an ant hill and try to focus the light of the sun upon the ant. If we were way out of focus, there was no effect. If we were nearly in focus, it got us excited, but the ant didn’t seem to pay any attention.

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