Sabine Hossenfelder discusses the physics of… dead grandmothers? Subscribe to Big Think on YouTube ► https://www.youtube.com/channel/UCvQECJukTDE2i6aCoMnS-Vg Up next, The Universe in 90 minutes: Time, free will, God, & more ► https://www.youtube.com/watch?v=tM4sLmt1Ui8 Sabine Hossenfelder investigates life's big questions through the lens of physics, particularly Einstein's theory of special relativity. She highlights the relativity of simultaneity, which states that the notion of "now" is subjective and dependent on the observer. This leads to the block universe concept, where past, present, and future all exist simultaneously, making the past just as real as the present. Hossenfelder also emphasizes that the fundamental laws of nature preserve information rather than destroy it. Although information about a deceased person disperses, it remains an integral part of the universe. This idea of timeless existence, derived from the study of fundamental physics, offers profound spiritual insights that can be difficult to internalize in our everyday lives. As a result, Hossenfelder encourages people to trust the scientific method and accept the profound implications of these discoveries, which may reshape our understanding of life and existence. As a physicist, Hossenfelder trusts the knowledge gained through the scientific method and acknowledges the challenge of integrating these deep insights into our daily experiences. By contemplating these profound concepts, we can potentially expand our understanding of reality and our place within it. 0:00 Is your dead grandma still alive? 1:25 Before Einstein… and after 2:53 Relativity of simultaneity, explained 5:14 Spacetime and the ‘block universe’ 6:10 Eternal existence: The conservation of quantum information 8:22 “I know it sounds crazy, but…” Read the video transcript ► https://bigthink.com/series/the-big-think-interview/is-there-life-after-death-399886/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description ---------------------------------------------------------------------------------- About Sabine Hossenfelder: Sabine Hossenfelder is a physicist, author, and creator of "Science Without the Gobbledygook". She currently works at the Munich Center for Mathematical Philosophy in Germany. ---------------------------------------------------------------------------------- Read more of our stories on physics: Is theoretical physics broken? Or is it just hard? ► https://bigthink.com/starts-with-a-bang/theoretical-physics-broken-or-hard/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description New physics? Ultra-precise measurement in particle physics confounds scientists ► https://bigthink.com/hard-science/muons-magnetic-moment-new-physics/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description Does physical reality objectively exist? ► https://bigthink.com/starts-with-a-bang/reality-objective-exist/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description ---------------------------------------------------------------------------------- About Big Think | Smarter Faster™ ► Big Think Our mission is to make you smarter, faster. Watch interviews with the world’s biggest thinkers on science, philosophy, business, and more. ► Big Think+ Looking to ignite a learning culture at your company? Prepare your workforce for the future with educational courses from the world’s biggest thinkers. Trusted by Ford, Marriot, Bank of America, and many more. Learn how Big Think+ can empower your people today: https://bigthink.com/plus/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description ---------------------------------------------------------------------------------- Want more Big Think? ► Daily editorial features: https://bigthink.com/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description ► Get the best of Big Think right to your inbox: https://bigthink.com/subscribe/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description ► Facebook: https://bigth.ink/facebook/ ► Instagram: https://bigth.ink/Instagram/ ► Twitter: https://bigth.ink/twitter/