On Mon, Feb 17, 2025, 5:50 PM Keyvan M. Sadeghi <keyvan.m.sade...@gmail.com> wrote:
Also planck time, can't go smaller than that on this side of space-time, > right? > Time is not discrete even at the Planck level as far as we know. The universe wrote 10^90 bits over its lifetime of 10^60 Planck time units. We don't have a unified model of physics, but we do have two useful approximations. If we set the gravitational constant G = 0, then this unknown model reduces to quantum mechanics. Or if we set Planck's constant h = 0, then we have general relativity. We can always do one or the other except at Planck scale, which is beyond our ability to test. In both models, time is symmetric. In quantum mechanics, the solution to the second order, deterministic differential wave equation relating mass, momentum, and energy is observers observing particles. Particle observations are probabilistic because the observer lacks complete knowledge of the state of the universe that contains it. General relativity produces observers that observe space and time. Space, time, and matter are not fundamental. Physics tells us what we observe, not what is. The key property of an observer is not consciousness, but simply memory. Writing to memory is not time symmetric because the prior content is erased irreversibly. This is why time seems to us to have a direction. The difference between past and future is what you know. Singularities happen all the time, we choose which ones are historically > important. Another singularity was the mainstream adoption of personal > computers. > A singularity is the end of time. There can't be more than one. ------------------------------------------ Artificial General Intelligence List: AGI Permalink: https://agi.topicbox.com/groups/agi/T72460285b911fa58-M14b447e1d1eaa51c066958b7 Delivery options: https://agi.topicbox.com/groups/agi/subscription
