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Listen to native speakers pronounce “time reversal” in real conversational contexts with synchronized timestamps and subtitles.
unifies all these concepts. So where does this arrow of time come from? Is it real or not? Now, the reason why physicists hesitate with this is that nowhere else other than in thermodynamics isthere this notion that time has a directionality? All our fundamental equations of physics are time symmetric. We say they're time reversal and variant. If you change the sign of the symboltime, the coordinate time in the equations, if you make t minus t, and more often than not, you have to make a few other tweaks as well, which we don't need to go into, then you realize that
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