Welcome to the Block Universe
a day ago
- #time
- #block-universe
- #physics
- The 2016 movie Arrival features heptapods, aliens with a circular language that allows them to perceive time all at once.
- The 'block universe' theory suggests time is a static, four-dimensional entity where past, present, and future coexist.
- Physicists like Max Tegmark and Brian Greene argue that time's flow is an illusion, with reality being a fixed structure.
- The arrow of time is explained by entropy, the tendency of systems to move from order to disorder.
- The universe's initial highly ordered state (Big Bang) allows for the perception of time's flow.
- Alternative theories by Julian Barbour and Carlo Rovelli propose timeless universes with either frozen Nows or event-based realities.
- Human perception creates the illusion of an advancing Now, as we only observe a limited fraction of reality.