Timelessness

[AFTT47]

The "B" theory of time really blows me away. I have a hard time wrapping my head around all points of time existing simultaneously. It's never a good bet to go against Einstein but is that really what is meant in relativity when it says all observers viewpoints are equally valid? Must all of time simultaneously exist like Brian Green's slices on a loaf of bread analogy to satisfy that tenant of relativity?

That's my understanding. Of course, Relativity breaks down at a quantum level, which gives theorists some wiggle room in exploring certain aspects of how time works on micro-levels. But read about the twin paradox, time dilation, length contraction, etc., and if the reality of those things don't hurt your head, nothing will.

I've known about all the other stuff since the 1970s. It never fazed me. Brian Green's documentary was the first I've heard about the time slices all existing at once. That would mean there is a near-infinite amount of copies of the universe - one for each Planck time since the big bang.