How would you know you're not in time dilation?

[BAYLOR]

If you were in time dilation , you'd hear a busy signal on the line .

 

[paranoid marvin]

Why do do think that?

Because we use 'time' as a plaster to cover many of our suppositions of how the universe works; just like with dark matter, which was only 'discovered' to make sense of why galaxies are held together.

I only have a little knowledge on this, but my understanding is that due to the massive amounts of 'empty' space, and the (relatively) small mass of visible items, i.e. suns, moons, planets etc, there isn't enough mass for gravity to hold them together. So we have to invent, suppose or call it what you will , something called 'dark matter' to make up the mass needed to make gravity work.

The same applies with time.; it's fundamental to our understanding of the universe. But with 99.99999999999999% of it undiscovered, we cannot - or should not - assume that there isn't something out there that will turn our understanding of time on its head.

 

[hitmouse]

Because we use 'time' as a plaster to cover many of our suppositions of how the universe works; just like with dark matter, which was only 'discovered' to make sense of why galaxies are held together.

I only have a little knowledge on this, but my understanding is that due to the massive amounts of 'empty' space, and the (relatively) small mass of visible items, i.e. suns, moons, planets etc, there isn't enough mass for gravity to hold them together. So we have to invent, suppose or call it what you will , something called 'dark matter' to make up the mass needed to make gravity work.

The same applies with time.; it's fundamental to our understanding of the universe. But with 99.99999999999999% of it undiscovered, we cannot - or should not - assume that there isn't something out there that will turn our understanding of time on its head.

I agree it is likely that we will make discoveries that modify our view of cosmology, and quite possible that our understanding of how time works will become more sophisticated, but I think it is unlikely that there will be a baby and bathwater situation with time. Science tends to be iterative and incremental rather than completely revolutionary. There are very good mathematical descriptions of time at subatomic, human, and cosmological scales that can be confirmed by experiment and observation. The fact that we cannot see all of the universe, and that some parts of our model are speculative, does not mean that modern understanding of time is necessarily built on sand.

 

[BAYLOR]

Okay, you take off from Earth traveling at the speed of light, time in side the ship main normal , you age normal. On earth time remain normal but from your perceptive , if you could look in upon the doings of earth , you'd would that time and events on earth has been speed and are going by as fin a blur. If people on earth could look in on you , you would be seen as hardly moving at all, or if you did movie it would imperceptible and no matter when thye would look in on you, you would Abe seemingly ageless and unchanging.

Another Traveler gets into another vehicle and ends upon orbiting a black hole, Time for him on the ship remains normal , but if he could look into the the doings on Earth , time also would appear to be moving in blur and yet for the people living on earth , time would be moving at normal speed for them. And if the people on Earth could look the pilot he or she would be seen as hardly moving at all and ageless

Return both travelers to Earth and they would aged list in comparison to Earth in which alot of time has passed . So vboth Velosity and Gravity are facts here.

Honestly, the whole concept of time dilation is rather difficult to wrap my head around.

 

[KGeo777]

I can't figure out time dilation either but I have been wondering if time and space are like a sponge and they actually fluctuate in structure, because I get a sense of time not being as linear or as drawn out as I used to think it was.
I have talked to people about how it seems that 1999 wasn't that long ago--and yet in 1999 I felt that 1979 was really a long time! And I have asked much younger people about how they perceive the time periods--and they also say 1999 seems like yesterday (I am talking about those who would be (in 1999) the same age I was in 1979 etc.
Why is that? Is it because of a lack of activity or cultural indifference or something else?

There's the theory of the universe being porous--and that we shift in and out of alternate dimensions without even knowing it--beyond occasional incidents like when you hear a celebrity is deceased and you would swear that you had heard it a few years ago (this happens to me).
Or you walk down a familiar street and notice a tree you have never seen before and have a foggy confusion about it. The theory suggests that if we were phasing in and out of other dimensions the changes would be so minor or remote there would be no way to have a consensus of understanding about it happening. Not sure if that is reasonable to assume but whatever.
Someone told me a story of their own on this- which sounds like it is right out of that Persons or Persons Unknown Twilight Zone episode.
--they encountered a bus driver they had seen every day when they went to school and said hi. But the driver did not recognize him at all.
He thought it weird and told his family. His father agreed it was weird that he did not remember him, but his mother and sibling had no memory of the bus driver at all.
Amnesia or localized dimensional fluctuations?