Is time physical?

[seer]

Time is the same thing as space in B theory. It's an additional axis.

Actually not all physicists believe time are space are the same thing, that was mentioned in one of my links.

Was Einstein wrong? The case against space-time theory

https://www.space.com/end-of-einstein-space-time

[Machinist]

Time is the same thing as space in B theory. It's an additional axis.

[seer]

Years are just convenient labels for a specific location in space time. That location exists, whether you call it 1953 or something else. It is a specific location in time. so yes years do exist in time. They don't exist in A-theory. They simply cease to exist as soon as "now" moves on.

Right locations, different locations but not different times. Time does not move or change when it is static.

[Sparko]

Nonsense, but you are correct 1953 no longer exists that is because time flows, it is not static. And you can say that I exist as a bay somewhere but you don't get to put a year on it because years do not exist in static time, for that you need A theory.

Years are just convenient labels for a specific location in space time. That location exists, whether you call it 1953 or something else. It is a specific location in time. so yes years do exist in time. They don't exist in A-theory. They simply cease to exist as soon as "now" moves on.

[seer]

Of course we can talk about 1953. It is an actual existing location in Space-time in B-theory. In A-theory, there is no 1953 and the same time you are in now was once 1953. It was just a younger version of the universe that no longer exists, just like baby seer was a younger version of you that no longer exists. He wasn't a different seer.

It appears you don't even understand A-theory, much less B-theory. This is like arguing the color red with a blind man.

Nonsense, but you are correct 1953 no longer exists that is because time flows, it is not static. And you can say that I exist as a baby somewhere but you don't get to put a year on it because years do not exist in static time, for that you need A theory.

[Sparko]

Good grief, you can not even speak about 1953 without invoking A theory. There is no 1953 in B theory because static time never changes. Nor can it. In A theory time actually does change...

Of course we can talk about 1953. It is an actual existing location in Space-time in B-theory. In A-theory, there is no 1953 and the same time you are in now was once 1953. It was just a younger version of the universe that no longer exists, just like baby seer was a younger version of you that no longer exists. He wasn't a different seer.

It appears you don't even understand A-theory, much less B-theory. This is like arguing the color red with a blind man.

[seer]

But in B-theory, 1953 is an actual existing location in space-time that still exists. As does 1954, 1955, and so on. So the only theory that does have different "times" is the block universe.

Good grief, you can not even speak about 1953 without invoking A theory. There is no 1953 in B theory because static time never changes. Nor can it. In A theory time actually does change...

[Sparko]

Physical locations are relative to other physical locations, but again there are not different "times" there is only one static time in B theory, time is not plural. The only way around that is to invoke A theory, but that relies on flow.

Wrong. As I keep saying in A-theory there is only ONE time, "Now," that just flows along. So once Time was called 1953, then 1954, now it is 2022. The very same time was moving along and things changed. There is no longer a 1953, 54, 55, etc. Those weren't different "times" they were just earlier periods in the flow of the one time. Was the baby Seer a different Seer than you are now? No, he was the SAME Seer as you are, just younger. And baby seer no longer exists.
Same with Time in A-theory.

But in B-theory, 1953 is an actual existing location in space-time that still exists. As does 1954, 1955, and so on. So the only theory that does have different "times" is the block universe.

Maybe you don't even understand the A-theory you keep touting.

[seer]

One could as easily ask, "how is your location different from my location?" What exactly distinguishes different locations?

For locations, I'd say the answer is "the stuff that is at the locations, and between the locations".

For TIME, I'd say the answer is "the events that happen at the different times, and between the times".

Physical locations are relative to other physical locations, but again there are not different "times" there is only one static time in B theory, time is not plural. The only way around that is to invoke A theory, but that relies on flow.

[Stoic]

Then tell me, how is baby seer's TIME different than old seer's TIME. What exactly distinguishes different times - not simply locations.

One could as easily ask, "how is your location different from my location?" What exactly distinguishes different locations?

For locations, I'd say the answer is "the stuff that is at the locations, and between the locations".

For TIME, I'd say the answer is "the events that happen at the different times, and between the times".

[Sparko]

Did it exist in the past?

1. Why would it matter? It doesn't exist now. Only one Time exists. Now.
2. If you think of A-theory time as a wave that moves us forward through time, then the "wave" is Time itself, right? Then the same wave we are on now is the same wave as existed in 1953. One wave, Time that flows from the past to the future, meaning there is only one Time that is moving. The past no longer exists because the wave isn't there now, it is here. And the future doesn't exist yet because the wave isn't there yet.

[seer]

1953 doesn't exist in A-theory. The only time that exists is "now" so there is only 1 time.

Did it exist in the past?

[Sparko]

So 1953 was not a different time?

1953 doesn't exist in A-theory. The only time that exists is "now" so there is only 1 time.

[seer]

There are no different times in A-theory either Seer. Just one time that keeps flowing forward.

So 1953 was not a different time?

[Sparko]

Well no, unless you don't believe that 1953 existed in the past.

Under A-theory the past does not exist so the only time that exists is the present so there is only one "time..."

Now.