The ray of light has to know where it will ultimately end up before it can choose the direction to begin moving in""Fermat's principle sounds weird because it describes light's behavior in goal-oriented terms. It sounds like a commandment to a light beam: "Thou shalt minimize or maximize the time taken to reach thy destination.
arrival fermat-s-principle free-will futurism philosophy physics science science-fiction time
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Themes

  • Philosophy — Deep thoughts on existence, knowledge, and the nature of reality
  • Science — Discovery, inquiry, and the wonders of the natural world
  • Time — Reflections on the passage of time and how we spend it

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