Spoiler Alert: this post contains huge spoilers about the end of the TV show Devs.

Devs, starring Sonoya Mizuno, Nick Offerman, Alison Pill and other wonderful actors, is an amazing and aesthetically impeccable story that relies heavily on modern interpretations of quantum mechanics. You don't need to understand QM to enjoy the show, it's already fantastic even if you don't, but man does it have layers... An understanding of quantum mechanics certainly enhances the experience and allows you to understand the story in a much deeper fashion. I'll attempt to be your guide in this incredible journey.

Portals are not Aperture Science's only remarkable scientific accomplishment. Among their other inventions is the Light Bridge, that provides a stable and seemingly immaterial surface that people can stand on. The bridge can also be turned on or off instantly.