Every Possible Way

Thirty-one years ago [1949], Dick Feynman told me about his "sum over histories" version of quantum mechanics. "The electron does anything it likes," he said. "It just goes in any direction at any speed, forward or backward in time, however it likes, and then you add up the amplitudes and it gives you the wave-function." I said to him, "You're crazy." But he wasn't.

--Freeman J. Dyson, 1983


Oh my life is changing everyday
In every possible way
And oh my dreams
it's never quite as it seems
'cause you're a dream to me
Dream to me

--Cranberries, 〈Dreams〉