The "time travel" is about how you measure "time" and how you define "time". If you change the time of your computer (1 month forward), does that create "time travel"? Not really, but some software may think you did. If your clock moves faster or slower, does that create "time travel"? Not really either, but some physics processes may react different depending on velocities (according to relativity).
So we have measurement of "time" and speed of "time" which can change. But we also have our real-world experience of time. This real-world time gives us the logic of cause-and-effect in the physical world. And it gives us experience of the now and memories of the past.
(Did you forget the date of your relationship's anniversary ? I think you're screwed.)
Here is a great video about the Math question: Why is there no equation for the perimeter of an ellipse‽ - Matt Parker https://www.youtube.com/watch?v=5nW3nJhBHL0
The "time travel" is about how you measure "time" and how you define "time". If you change the time of your computer (1 month forward), does that create "time travel"? Not really, but some software may think you did. If your clock moves faster or slower, does that create "time travel"? Not really either, but some physics processes may react different depending on velocities (according to relativity).
So we have measurement of "time" and speed of "time" which can change. But we also have our real-world experience of time. This real-world time gives us the logic of cause-and-effect in the physical world. And it gives us experience of the now and memories of the past.
(Did you forget the date of your relationship's anniversary ? I think you're screwed.)
Thanks for this.
I confess I also struggle with the "twins" paradox- one on earth and one travelling through space/time.
Can you measure time in heartbeats for each twin? A million each = different points i tim?
Einstein's idea of time is that everyone (and everything) has its own time. This seems weird and is confusing.
I rather see it as everything has an internal clock, which can sometimes run slower or faster.
Here is a video about that. https://www.youtube.com/watch?v=aRtKSHvT2-c