Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription. You can support me on Patreon: https://www.patreon.com/Sabine Most physicists currently believe that our universe expanded exponentially right after the big bang. This rapid phase of expansion is called "inflation". Its advocates argue that the theory of inflation has made correct predictions. Its critics say that inflation isn't even science. Who is right? They're both right and they're both wrong. In this video I lay out the argument for you. The podcast I mention at 6 minutes 30 seconds is this: https://www.youtube.com/watch?v=YhbULagUKhA 0:00 Intro 0:53 The controversy 2:09 Did inflation make predictions? 5:47 Does inflation work like the standard model? 8:58 The argument from popularity 9:57 What does inflation explain? 11:34 Who is right now? 12:18 Sponsor message