Try out my quantum mechanics course (and many others on math and science) on Brilliant using the link You can get started for free, and the first 200 will get 20% off the annual premium subscription. Take the quiz to see if you understood everything: If you've been following my channel for a really long time, you might remember that some years ago I made a video about whether faster-than-light travel is possible. I was trying to explain why the arguments saying it's impossible are inconclusive and we shouldn't throw out the possibility too quickly, but I'm afraid I didn't make my case very well. This video is a second attempt. Hopefully this time it'll come across more clearly! 📚 Buy my book ➜ 💌 Support us on Donatebox ➜ 👉 Transcript and References on Patreon ➜ 📩 Sign up for my weekly science newsletter. It's free! ➜ 🔗 Join this channel to get access to perks ➜ 00:00 Intro 01:51 The Speed of Light as Limit 06:12 The Speed of Light as Barrier 12:44 Time Travel Paradoxes 20:47 Quantum Gravity and Summary 21:54 Learn Physics on Brilliant #science #physics