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This still misses the biggest question about the nature of time. The problem is not that we perceive the world as a set of space-like frames. The problem is why

This still misses the biggest question about the nature of time. The problem is not that we perceive the world as a set of space-like frames. The problem is why our consciousness perceives the frames moving from one to another at all and in particular direction.

qaq 2y ago
Is it a question about nature of time or about our perception of time though?
goatlover 2y ago
Because the universe is evolving from a low entropy state to a high one.
- fpoling 2y ago
  This does not explain the flow of time nor the direction of how consciousness perceives it. A low entropy is just a low probability state. Such state in the past is just as unlikely as in future as physical models are time-reversible. Moreover, there is no evolution in physical models. The universe is just 4-dimensional thing. Surely time in physics is different from space as we can predict across time based on on the condition in 3-d space-like surface, while if one make a slice in the 4-d universe with 2 space dimensions and one time-dimension, predicting across the remaining space dimension is impossible. But that does not explain why our perception flows from one space-like slice to another and in particular direction. Surely some of the slices are less common (low entropy) then others (high entropy), but there is no movement or evolution. A good analogy is a rod with a color gradient from white on one end and black on another with white turning into black quickly so most of the rod is black. We can arbitrary call the white side first and even say that the color evolves from white to black. Then as the white side is a low probability as a randomly selected slice of the rod will be black, we can even say that the color evolves from a low probability to high probability stare. But this is arbitrary as in reality color does not evolve and there is just the single colored rod.

qaq 2y ago

Is it a question about nature of time or about our perception of time though?

goatlover 2y ago

Because the universe is evolving from a low entropy state to a high one.

fpoling 2y ago
This does not explain the flow of time nor the direction of how consciousness perceives it. A low entropy is just a low probability state. Such state in the past is just as unlikely as in future as physical models are time-reversible. Moreover, there is no evolution in physical models. The universe is just 4-dimensional thing. Surely time in physics is different from space as we can predict across time based on on the condition in 3-d space-like surface, while if one make a slice in the 4-d universe with 2 space dimensions and one time-dimension, predicting across the remaining space dimension is impossible. But that does not explain why our perception flows from one space-like slice to another and in particular direction. Surely some of the slices are less common (low entropy) then others (high entropy), but there is no movement or evolution. A good analogy is a rod with a color gradient from white on one end and black on another with white turning into black quickly so most of the rod is black. We can arbitrary call the white side first and even say that the color evolves from white to black. Then as the white side is a low probability as a randomly selected slice of the rod will be black, we can even say that the color evolves from a low probability to high probability stare. But this is arbitrary as in reality color does not evolve and there is just the single colored rod.