The author is a physicist and discusses his theories on time. There is a conflict between Einstein’s general relativity and modern quantum mechanics, and the concept of time is at the heart of this battle. If time is part of an eternal four-dimensional block of spacetime, then nothing can truly change. The author discusses how a “cosmic evolution” could select different laws of physics by spawning new universes over time. He gives several other theoretical examples of how time is “real”, our universe is constantly flowing along in time, and how even the laws of physics can evolve.
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