Many argue that string theory cannot be proven and should therefore be abandoned. For them, string theory is not science at all. But are they right? Here to discuss these claims with me is none other than Cumrun Vafa! Cumrun is the Hollis Professor of Mathematics and Natural Philosophy in the Department of Physics at Harvard University, where he has been researching and teaching theoretical physics since 1985. His primary area of research is string theory.  In our interview, we discussed why we should trust String Theory, Fine Tuning, and the message he'd put into a billion-year time capsule. We also talked about his recently released book Puzzles to Unravel the Universe.  Tune in!  Key Takeaways:  Intro (00:00) Judging a book by its cover (01:04) What is a puzzle versus a mystery? (03:37) Is string theory actually science? (10:37) Dimensional analysis (17:02) Singularities (19:41) ADS and 5 dimensions (27:04) Abandoning string theory (34:12) Supersymmetry (35:12) On religion (39:50) A scorecard for physics (52:18) What would your "ethical will" be? (56:51) What have you accomplished that once seemed impossible? (1:02:22) — Additional resources:  🥗 Thanks, HelloFresh! Go to HelloFresh.com/50impossible and use code 50impossible for 50% off plus 15% off the next 2 months. 📝 With a MasterClass annual membership, you can take one-on-one classes from the world’s best for $10 a month with your annual membership, get unlimited access to every class — and even better, right now, as an Into The Impossible listener, you can get 15% off when you go to MASTERCLASS.com/impossible. 🧑‍💻 Visit LinkedIn.com/IMPOSSIBLE to post your job for free! 📚 Puzzles to Unravel the Universe by Cumrun Vafa: https://a.co/d/iWnNDup  💻 Cumrun’s website: https://www.cumrunvafa.org/  ➡️ Follow me on your fav platforms: ✖️ Twitter: https://twitter.com/DrBrianKeating  🔔 YouTube: https://www.youtube.com/DrBrianKeating?sub_confirmation=1  📝 Join my mailing list: https://briankeating.com/mailing_list  ✍️ Check out my blog: https://briankeating.com/blog.php  🎙️ Follow my podcast: https://briankeating.com/podcast  — Into the Impossible with Brian Keating is a podcast dedicated to all those who want to explore the universe within and beyond the known. Make sure to follow so you never miss an episode! Learn more about your ad choices. Visit megaphone.fm/adchoices