Any genius, physicist, etc here that can go over and see if my assumption is correct ??? Please feel free to make any corrections and I am willing to learn. Thank you and God Bless


This is why ** I ** believe it is currently impossible with our technology and maybe even future technology to build a time machine to go back in time. Watch this video and you will see; we and everything in our universe are constantly moving. If you wanted to go back in time, you would need to know the exact coordinates of where the Earth was at the time you wanted to go back to. If you calculated wrong, you could end up in empty space. Same thing with going forward in time. We do not know the exact direction we are moving as anything can influence our trajectory in space. A gravitational pull of a small asteroid that suddenly appears in one part of our galaxy can cause a ripple affect of the movement of everything in our galaxy, etc. Also remember that our Milky Way galaxy is also moving along the vastness of the universe at a certain speed. We also know that the universe is expanding however we do not know if it is expanding at a constant rate or not, we just know a **general** speed figure. So again it almost makes it nearly impossible to calculate. Again this is just my opinion and limited education and understanding. I would love to be proven wrong and be able to free physically time travel. Thoughts ??? Comments ???

As far as I gather, it is very possible that time is a construct of human consciousness itself. Continuity inherently enables our existence as subjective entities. If that is the case, then time may not exist independently or without, consciousness.

Take away consciousness, and time no longer matters.

Thomas Cambell, an experimental physicist, recently did an interesting interview on Joe Rogan(that's RIGHT, DUDE BRO), talking about his assertion that consciousness is all that really exists in the universe. That messes with a lot of shit I tell myself is true.

Who knows, I like hearing people try to make heads or tails of this existence. Your guess is as good as mine, I'm starting to think anything is possible.

There are more significant reasons to dismiss the possibility of time travel than just not knowing where you might end up (e.g. the center of the planet, and no two objects being able to occupy the same space). Violation of causality is probably the most significant. Even if the "many worlds" theory is valid, the thought that a new universe is created every time a quark flips its spin seems doubtful.

There is much we don't know about the physics of our universe, but time travel seems very unlikely.

From another perspective, if it were possible, surely some creature would have evolved the ability to use it by now.

In the movie Lucy, Scarlett Johannson explains it at the end.

Wait.... no, never mind.

Physicists don't know what time actually IS, but they do know experimentally that it NEVER unfolds backwards, by experiment no less. Funny thing however is that the math is not violated going backwards, it supports time going forward AND backward with equal elacrity.

Sure time may be an emergent property, but because it is involved in almost all forms of physics, it has to be real in some way or another. But for now they really don't know why.

Be careful about things existing or not really existing. A chair sitting in your kitchen is real, it's a real thing, you can see it, sit in it, or burn it in your backyard pit. So it's real for sure, but there are NO mathematics that explains it AS A CHAIR. So I guess you could think of time in sort of that way as well.

Remember also that time, and space itself, is not what it appears to you and I. It's accurately described mathematically, accurately, as a four dimensional mainifold, so what you see in front of you is not necessarily what someone else would see what you're looking at from any distance, which is more dramatic with distance. And it's not linear in behavior, it twists and morphs with gravity and the expansion of space itself.

In essence MY time is NOT your time (literally), and your space is NOT my space (literally).

Maybe if I had taken LSD in the 1970s I would understand these things. It takes quite a bit of hard work for years before junior physicists are able to comprehend these things more innately.

quote:

Originally posted by preten2b:
In the movie Lucy, Scarlett Johannson explains it at the end.

Wait.... no, never mind.

Yea, she explains it very well indeed.

quote:

Originally posted by architect:
There are more significant reasons to dismiss the possibility of time travel than just not knowing where you might end up (e.g. the center of the planet, and no two objects being able to occupy the same space). Violation of causality is probably the most significant. Even if the "many worlds" theory is valid, the thought that a new universe is created every time a quark flips its spin seems doubtful.

There is much we don't know about the physics of our universe, but time travel seems very unlikely.

From another perspective, if it were possible, surely some creature would have evolved the ability to use it by now.

I agree that the "location problem" is the least of the reasons to think time travel can't happen.

quote:

I agree that the "location problem" is the least of the reasons to think time travel can't happen.

The question I wonder about... is if the advance of time could be compressed or limited if we figured out a way to travel through space at or near the speed of light. If so, space travel to distant galaxies might be possible.

If time travel was ever going to happen, it would have happened already. Somebody would have been here from the future, and then time travel would have always existed.

^^^^

I figure it's already happened, and the fella who did it knew how badly we'd screw things up if we figured out how to do it.

Knowing that, he came back in time to "hide the keys" from us, so to speak, so we wouldn't get a chance to screw it up.

Don’t forget the crystals.

This was solved over 60 years ago. T.A.R.D.I.S.



Alternatively, it doesn't matter because your already in a Starship when you slingshot around the Sun.

quote:

Originally posted by architect:
Even if the "many worlds" theory is valid, the thought that a new universe is created every time a quark flips its spin seems doubtful.

You wouldn’t fork it, just check out a new branch.


That was intended as nerd humor, but the more I think about it…

If time travel backwards is possible, then everything needed to make it feasible would be just a matter of figuring out.

The problem is whether if time is a dimension that can be traversed at all or whether it is a point dimension that exist here and now. If so, the past only exists in our memory and our future is still indeterminate to some extent.

However, at time travel goes in terms of the future, there have been experiments that future events actually influence the present.

I've mentioned it before but certain light rays act either as particles or waves depending if it passes through just one filter or two. They set up an experiment where a ray is filtered through one filter first then measured then a second filter is randomly put in play.

The experiment showed that the ray acted appropriately when measured (either as a particle or wave) before the determination whether a second filter was going to be randomly deployed. So the ray "knew" in advance whether a second filter was going to be in its path.

There is no such thing as time…

Forward time travel is kind of possible, at least relative to human experience. The faster an object moves the slower time appears to tick to that object. It is currently not practical to achieve near light speeds, but theoretically a human could experience arriving into the distant future in what seemed like a very short trip.

Other than that, time travel does not seem possible. Especially in reverse.

I wish it worked man. I’d go back to Jennifer Connelly’s 18th birthday and beg. I figure I could tell her which roles to skip and she might give a mercy one.

Since time is part of space/time, I would think that a way to separate time from space would be needed for time travel to be possible - if that separation is even possible.

Then, what amount of energy would be needed to do it?
Also, considering other factors like causality, it doesn't seem likely.

But what do our small minds of limited knowledge know?