Originally posted by @fabianfnas
"met tense"
Thank you for the English lesson. I still have some more to learn.
You see the universe as a floating 'now' progressing forward in time.
But this *is* the time dimension. If everything progresses at the same speed, that would be one thing, but it isn't. Time dilation contradicts this. The only thing we cannot do is to move back in time. ...[text shortened]... existence/lack of a time dimension?
You deny the time dimension as real. Most scientists don't.
I don't deny time is a dimension in the sense that it's real, but both time and space are
intangible realities. By that I mean space relies on tangle 3D objects for defining and making the presence of space known, and time relies on both space and tangible reality (3D objects) for motion to exist.
Remove time, and it should be physically possible for both space and tangible reality to exist. However, if you remove space (all of it) time could not exist... because there would be no movement.
I'm not sure what the remaining physical reality might be (or look like) if space left town and took his buddy 'time' with him...
Maybe a singularity? I don't know.
imo time travel isn't science fiction, it's science fantasy. It's fun to think about (I like the idea) and for a while I was a Dr Who fan. But even if it was possible to start a journey back in time, you wouldn't be able to back up for as long as one or two seconds. All the forces involved in holding you together would kick into reverse and you would quickly dissolve into the surrounding space.
By the way, this is only within the realm of science 'thought', not fact. In other words, I'm not presenting any of this as science 'fact'...
(
that should keep the buzzards at bay for a while )