Comments by "RB 70" (@RB-bd5tz) on "Why No One Has Measured The Speed Of Light" video.

  1. "Spacetime" does seem intuitively wrong to me as well. These quantum theorists & physicists may be correct, and they say they've done experiments to verify they're correct, and that satellites wouldn't work if they weren't correct, and so on. So I'm not arguing with them, since I'm no expert. But to me, a practical definition of time is that it is synonymous with change (or motion). If there were no time, nothing could move, because motion requires time, and so the universe would be a still photograph, or sculpture. On the flip side, if there were no motion, there would essentially be no time. We measure the motion of objects relative to the motion of other objects, e.g. the hands of a clock. (That's MY theory of relativity!) But since NOTHING would move - even the clock hands - there would essentially be no time, since we only perceive time through change. Again, the universe would be a still photo. Even figuratively, if we come across a town where everything is as it was hundreds of years ago (Amish community?), we say "time has stood still here" because there has been no change.
    1