#433 – Sara Walker: Physics of Life, Time, Complexity, and Aliens

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<p>Sara Walker is an astrobiologist and theoretical physicist. She is the author of a new book titled &#8220;Life as No One Knows It: The Physics of Life&#8217;s Emergence&#8221;. Please support this podcast by checking out our sponsors:<br /> &#8211; <b>Notion</b>: <a href="https://notion.com/lex">https://notion.com/lex</a><br /> &#8211; <b>Motific</b>: <a href="https://motific.ai">https://motific.ai</a><br /> &#8211; <b>Shopify</b>: <a href="https://shopify.com/lex">https://shopify.com/lex</a> to get $1 per month trial<br /> &#8211; <b>BetterHelp</b>: <a href="https://betterhelp.com/lex">https://betterhelp.com/lex</a> to get 10% off<br /> &#8211; <b>AG1</b>: <a href="https://drinkag1.com/lex">https://drinkag1.com/lex</a> to get 1 month supply of fish oil</p> <p>Transcript: <a href="https://lexfridman.com/sara-walker-3-transcript">https://lexfridman.com/sara-walker-3-transcript</a></p> <p><b>EPISODE LINKS:</b><br /> Sara&#8217;s Book &#8211; Life as No One Knows It: <a href="https://amzn.to/3wVmOe1">https://amzn.to/3wVmOe1</a><br /> Sara&#8217;s X: <a href="https://x.com/Sara_Imari">https://x.com/Sara_Imari</a><br /> Sara&#8217;s Instagram: <a href="https://instagram.com/alien_matter">https://instagram.com/alien_matter</a></p> <p><b>PODCAST INFO:</b><br /> Podcast website: <a href="https://lexfridman.com/podcast">https://lexfridman.com/podcast</a><br /> Apple Podcasts: <a href="https://apple.co/2lwqZIr">https://apple.co/2lwqZIr</a><br /> Spotify: <a href="https://spoti.fi/2nEwCF8">https://spoti.fi/2nEwCF8</a><br /> RSS: <a href="https://lexfridman.com/feed/podcast/">https://lexfridman.com/feed/podcast/</a><br /> YouTube Full Episodes: <a href="https://youtube.com/lexfridman">https://youtube.com/lexfridman</a><br /> YouTube Clips: <a href="https://youtube.com/lexclips">https://youtube.com/lexclips</a></p> <p><b>SUPPORT &#38; CONNECT:</b><br /> &#8211; Check out the sponsors above, it&#8217;s the best way to support this podcast<br /> &#8211; Support on Patreon: <a href="https://www.patreon.com/lexfridman">https://www.patreon.com/lexfridman</a><br /> &#8211; Twitter: <a href="https://twitter.com/lexfridman">https://twitter.com/lexfridman</a><br /> &#8211; Instagram: <a href="https://www.instagram.com/lexfridman">https://www.instagram.com/lexfridman</a><br /> &#8211; LinkedIn: <a href="https://www.linkedin.com/in/lexfridman">https://www.linkedin.com/in/lexfridman</a><br /> &#8211; Facebook: <a href="https://www.facebook.com/lexfridman">https://www.facebook.com/lexfridman</a><br /> &#8211; Medium: <a href="https://medium.com/@lexfridman">https://medium.com/@lexfridman</a></p> <p><b>OUTLINE:</b><br /> Here&#8217;s the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time.<br /> (00:00) &#8211; Introduction<br /> (10:40) &#8211; Definition of life<br /> (31:18) &#8211; Time and space<br /> (42:00) &#8211; Technosphere<br /> (46:25) &#8211; Theory of everything<br /> (55:06) &#8211; Origin of life<br /> (1:16:44) &#8211; Assembly theory<br /> (1:32:58) &#8211; Aliens<br /> (1:44:48) &#8211; Great Perceptual Filter<br /> (1:48:45) &#8211; Fashion<br /> (1:52:47) &#8211; Beauty<br /> (1:59:08) &#8211; Language<br /> (2:05:50) &#8211; Computation<br /> (2:15:37) &#8211; Consciousness<br /> (2:24:28) &#8211; Artificial life<br /> (2:48:21) &#8211; Free will<br /> (2:55:05) &#8211; Why anything exists</p>