Passing A Portal Through Itself

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Published 2022-09-01
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This video is about what happens if you try to pass a portal (like in the video game Portal or Portal 2) through itself - do you get a paradox? Infinite recursion? Impossibility? Contradiction? The end of the world? Collapse of the wavefunction? Ultimately it ends up looking beautiful and weird and recursive and... just watch the video :)

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Created by Henry Reich

All Comments (21)
  • I love how it's just generally accepted now that Portal's Portals are the only things we're allowed to use for diagrams with portals.
  • @The2wanderers
    I can see why the game designers avoided dealing with this through the simple expedient of making the portal close if it's moved.
  • @ZackRappMusic
    It’s shocking how well you explained such a trippy and abstract idea in such a short amount of time
  • @TamDNB
    Portals actually are everywhere, the problem is they're all back to back, with no way to separate them
  • @puzzLEGO
    Portal physics must be the thing that keeps this guy up at night and he had to explain it or he would die from curiosity
  • @Marshall_ROBLOX
    This is a troubling thought that I had as a child ever since the release of Portal 2. Thank you so much for solving this 😊
  • @Marcin_Nyczka
    I'd love for you to make a similar video about a more general problem with so-called scaling portals, i.e. those that vary in size, and when something falls into one portal, it comes out of the other with a proportionally changed size. For example - the blue portal is 7 times bigger than the orange one, which means that if a 1.75 meter tall man entered the orange portal, a 12.25 meter tall giant would come out of the blue one. However, if the same 1.75 meter tall man entered the blue portal, a 0.25 meter tall dwarf would emerge from the orange portal. My question is - what would happen if you threw a smaller portal into a larger one, and would it be possible to throw a larger portal into a smaller one if they had the right shapes, and if so, what would be the effect. You will make me very happy if you make a film about it.
  • @dr_birb
    I like the fact that if you're thinking with portals, they always will be blue and orange. It's hard to imagine using other colors for em.
  • @mt_xing
    Someone's been replaying Portal a lot haven't they?
  • @reconbomb0013
    Glad to see Portal and Portal 2 are still iconic enough to be the way portals are drawn in 2022
  • I like how he just talks about Portals like the ones from the game are the universal standard when we talk about Portals.
  • @ixelaria
    I love that you used the Companion Cube! The Portal references are amazing!
  • @EmceeJoseph
    An important detail here is that each portal must have a backing that blocks entry such that entry is possible only through the coloured fronts of the portals. Changing that changes so much.
  • @AmoghA
    I'm convinced Henry is making real, working Portals and is posting videos of him testing new features for people to point out so he can fix it. Very effective debugging process.
  • @Lunarcreeper
    i love how portal has completely changed how we interpret portals and we always see it as one orange and one blue one
  • @rooddy.
    This is one of the greatest videos I've ever watched.
  • @RhodaKshba
    you always deliver content that's both thought-provoking and enjoyable!