He’s written some “Notes” on the story when it was printed in his first short story collection and said that it has the same theme but that he wasn’t inspired by it directly. The roots were Paul Linke’s play “Time Flies When You’re Alive” and the principle of least time in optics – if you treat light as a ray, it has to know its future destination in order to know the path with the shortest time it will take to get there (though not if it’s a wave). Then there’s a bunch of diagrams and discussions about the principle’s implications for free will that will stretch your brain. It’s pretty fun.
He’s written some “Notes” on the story when it was printed in his first short story collection and said that it has the same theme but that he wasn’t inspired by it directly. The roots were Paul Linke’s play “Time Flies When You’re Alive” and the principle of least time in optics – if you treat light as a ray, it has to know its future destination in order to know the path with the shortest time it will take to get there (though not if it’s a wave). Then there’s a bunch of diagrams and discussions about the principle’s implications for free will that will stretch your brain. It’s pretty fun.