How does light 'know' the shortest path? https://tube.blueben.net/videos/watch/cb5825d5-336d-495d-ad8d-8d47123996db Light is the fastest thing in the universe. In order to be this fast it always needs to take the shortest path (as it's speed cannot change). So how does it always know what the shortest path is? Fri, 10 Jul 2026 15:02:38 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.blueben.net How does light 'know' the shortest path? https://tube.blueben.net/client/assets/images/icons/icon-96x96.png https://tube.blueben.net/videos/watch/cb5825d5-336d-495d-ad8d-8d47123996db All rights reserved, unless otherwise specified in the terms specified at https://tube.blueben.net/about and potential licenses granted by each content's rightholder.