Do you believe time travel is possible?

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Famous celebrities found in vintage pictures proves time travel is possible.

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I think that's proof of cloning being around much longer than we had previously thought.
 
If you travelled back in time 30 years you would be removing matter and energy from the present and adding them to the past which violates the rule that matter can neither be created nor destroyed. Not only that you would be taking back identical atoms to those which existed then which would violate the Law Of Identity.
But subatomic particles are coming into and out of existence all the time, so they might be free to time travel. And of course, the photon that's re-emitted isn't the same photon that was absorbed, and when a neutron decays you get a whole new set of particles again.

I vaguely remember reading about one of the bonkers quantum effect experiments that seemed to show a detector affecting events earlier in the experiment depending on whether it was turned on or off. Reversing cause and effect is the essence of time travel.
 
If you travelled back in time 30 years you would be removing matter and energy from the present and adding them to the past which violates the rule that matter can neither be created nor destroyed. Not only that you would be taking back identical atoms to those which existed then which would violate the Law Of Identity.

Ah there's ways around that. Replacement rather than displacement, essentially. Send something back while simultaneously bringing something of equivalent "size" back at the same time. The old switcheroo.

Anyway, on the quantum level the old "can't create or destroy" thing doesn't hold true. Things down there in the foam jump in and out of existence all the time.

There are scientific reasons why it can't happen, but yours aren't them. ;)
 
I can't be bothered to read 10 pages of posts, so this might have already been said, but most of us have already time travelled, albeit to a future so minutely in advance its indiscernible - flying, for example, at 500mph at 30000ft, causes you to travel in time, sort of - see Gravitational time dilation for more info - not really time travel but as close as we can get at the moment
 
I can't be bothered to read 10 pages of posts, so this might have already been said, but most of us have already time travelled, albeit to a future so minutely in advance its indiscernible - flying, for example, at 500mph at 30000ft, causes you to travel in time, sort of - see Gravitational time dilation for more info - not really time travel but as close as we can get at the moment

If you'd read the first 6 posts, you'd see that yes, this has been pointed out. :)
 
Doesn't matter.

If it's ever invented, all of the changes to the time line have anyway happened and this is the outcome.
 
Ah there's ways around that. Replacement rather than displacement, essentially. Send something back while simultaneously bringing something of equivalent "size" back at the same time. The old switcheroo.

Anyway, on the quantum level the old "can't create or destroy" thing doesn't hold true. Things down there in the foam jump in and out of existence all the time.

There are scientific reasons why it can't happen, but yours aren't them. ;)

The Law Of Identity says that each "thing" is unique. So if you bring a vase back 30 years to a time when it already existed, not only is it the same collection of atoms in the same shape, each individual atom is the same one which existed 30 years ago. That's logically impossible unless somebody proves otherwise. I don't pretend to know anything about quantum physics and I doubt anybody other than a number of scientists do either. I would be interested to know what somebody like Lawrence Krauss would say.
 

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