How many alien civilizations are out there? | Ryan Graves and Lex Fridman

Lex Fridman Podcast full episode: https://www.youtube.com/watch?v=qLDp-aYnR1Y Please support this podcast by checking out our sponsors: - GiveWell: https://www.givewell.org/ and use code LEX - Notion: https://notion.com/startups to get up to $1000 off team plan - Magic Spoon: https://magicspoon.com/lex and use code LEX to get $5 off - ExpressVPN: https://expressvpn.com/lexpod to get 3 months free GUEST BIO: Lt. Ryan Graves is a former Navy fighter pilot, who has worked on advanced research and development programs for DARPA, Office of Naval Research, and Air Force Research Labs on topics of multi-agent collaborative autonomy, AI-assisted air-to-air combat, and manned-unmanned teaming technologies. Ryan and people in his squadron detected and engaged with UFOs on multiple occasions, and he has been one of the few people willing to speak publicly about these experiences. PODCAST INFO: Podcast website: https://lexfridman.com/podcast Apple Podcasts: https://apple.co/2lwqZIr Spotify: https://spoti.fi/2nEwCF8 RSS: https://lexfridman.com/feed/podcast/ Full episodes playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4 Clips playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOeciFP3CBCIEElOJeitOr41 SOCIAL: - Twitter: https://twitter.com/lexfridman - LinkedIn: https://www.linkedin.com/in/lexfridman - Facebook: https://www.facebook.com/lexfridman - Instagram: https://www.instagram.com/lexfridman - Medium: https://medium.com/@lexfridman - Reddit: https://reddit.com/r/lexfridman - Support on Patreon: https://www.patreon.com/lexfridman