this post was submitted on 14 Jan 2026
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The gravity is going down parallel to the portal opening though, so both portals have the same gravity direction, the only thing speeding you up is the slide
the fact that would violate the laws of thermodynamics (infinite energy) is a pretty good indication that's wrong.
Portals already violate the laws of thermodynamics. We’re arguing about whether gravity would work here.
That's not how it works, when you actually simulate it it doesn't violate the laws of thermodynamics, the gravity would be bending outside of the portal so that it would be pulling up from the portal on the top, you should watch the video it is really technical but it explains almost every question you could ask about portals (except when it gets to relativity) because it is an actual simulation of gravity, and if that isn't enough he has an entire series, 3 portals? Portal inside of Portal? Portal moving onto a cube? Literally all of it and more.
Well thank god a magic portal doesn't violate the laws of thermodynamics, I was getting worried about science for a while there
Magic portals are one option but portals are actually completely allowed in relativity they probably don't exist but my point is you can make physically consistent portals that actually have laws they obey.