Current Events > When time travel is invented, we need to get consent

(+) Yeah! (+)

from our future kids for getting born.

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if time travel was possible we'd know about it because someone from the future would have traveled back here to tell us about it. basically since time travel isn't a thing right now it won't ever be.

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Giant_Aspirin posted...

if time travel was possible we'd know about it because someone from the future would have traveled back here to tell us about it. basically since time travel isn't a thing right now it won't ever be.

Not if it creates an alternate universe

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Giant_Aspirin posted...

if time travel was possible we'd know about it because someone from the future would have traveled back here to tell us about it. basically since time travel isn't a thing right now it won't ever be.

Unless you can only time travel to and from the future of the point in which time travel is created.

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I thought it was scientifically possible to go into the "future" but not "back".

Correct me if I'm wrong. I'm not a scientist myself nor a pornstar.

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Austin_Era_II posted...

I thought it was scientifically possible to go into the "future" but not "back".

Correct me if I'm wrong. I'm not a scientist myself nor a pornstar.

We're travelling into the future at a rate of 1 second per second
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Austin_Era_II posted...

I thought it was scientifically possible to go into the "future" but not "back".

Correct me if I'm wrong. I'm not a scientist myself nor a pornstar.

time dilation is a real thing, but it only goes "in one direction". the closer you get to the speed of light the 'slower' time becomes for you. like how during Interstellar how like an hour on that one planet meant seven years passed on Earth or w/e.

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https://www.youtube.com/watch?v=PTg-I3qtDrU&t=4

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Giant_Aspirin posted...

if time travel was possible we'd know about it because someone from the future would have traveled back here to tell us about it. basically since time travel isn't a thing right now it won't ever be.

You're assuming their isn't rules like not telling anyone you're a time traveller.

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Time travel is possible. You just rearrange the whole universe into the position it was at a certain point in time.
Like the molecules in your body get ripped out and put back into the ground or whatever animal it came from. You essentially kill everyone in the present.
Possible doesn't mean feasible.
Basically the knowledge required to do this is something only god would have.

darkphoenix181 posted...

Time travel is possible. You just rearrange the whole universe into the position it was at a certain point in time.
Like the molecules in your body get ripped out and put back into the ground or whatever animal it came from. You essentially kill everyone in the present.
Possible doesn't mean feasible.
Basically the knowledge required to do this is something only god would have.

What do you do about the entropy?
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teepan95 posted...

What do you do about the entropy?

Simple you just create energy from nothing and excite the molecules to their previous level of energy.

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So kill humanity to travel into the future is what God plans...I see...I see...

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Tyranthraxus posted...

teepan95 posted...

What do you do about the entropy?

Simple you just create energy from nothing and excite the molecules to their previous level of energy.

But that increases entropy even more. You need to reduce it to go back in time
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teepan95 posted...

What do you do about the entropy?

You don't.

Because you somehow know the position of every molecule, particle, etc in the universe in a given point in time.
And you simply force it all back into those positions from where they are in the present.
If energy is in another form today, it is reset back to exactly what it was.

The problem is not entropy but these 3:

1. You are part of the universe and is your body. To reset every molecule, particle, etc means you die as well. How to extract you safely from "time" and still reset everything?
2. The ability to know where everything was in the past
3. The ability to move every particle, molecule etc

FF_Redux posted...

from our future kids for getting born.

predestination

ethan hawk

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darkphoenix181 posted...

Because you somehow know the position of every molecule, particle, etc in the universe in a given point in time.
And you simply force it all back into those positions from where they are in the present.
If energy is in another form today, it is reset back to exactly what it was.

If I heat something up, entropy increases. If I cool it back to its original temperature, entropy still increases
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teepan95 posted...

But that increases entropy even more. You need to reduce it to go back in time

It only increases entropy because more energy = more capacity for entropy. Think of it like blood. Your body contains x amount of blood. You're bleeding y blood per minute until you have eventually bled out x blood (heat death of the universe). But you get a blood transfusion of Z blood. Now to reach the heat death of the universe you have to bleed out x+z blood which is more than before but it successfully fights off your bleeding (entropy) so you can survive a little longer.

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teepan95 posted...

If I heat something up, entropy increases. If I cool it back to its original temperature, entropy still increases

This isn't heating or cooling. This is making everything go back into a "position" it was in the past.

For example. The water in your bladder a few years ago was ice in a glacier.

How this is done is one problem. I think you are assuming it requires a machine that uses crazy energy. But that is wrong because the machine is made up of particles that must also be reset and the same with the energy.

Perhaps it could be a machine in another universe using energy of that universe. You create entropy there but who cares.

So be like water my friend?

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Tyranthraxus posted...

It only increases entropy because more energy = more capacity for entropy.

Not quite. S = Q/T

darkphoenix181 posted...

This isn't heating or cooling. This is making everything go back into a "position" it was in the past.

And that's my point. Any change that occurs increases (or doesn't change) entropy. It doesn't decrease it at all
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teepan95 posted...

Not quite. S = Q/T

And that's my point. Any change that occurs increases (or doesn't change) entropy. It doesn't decrease it at all

Perhaps that is the key to having you stay in the scenario. Everything is reset but entropy. From that maybe is the key to knowing you are from another time.

At the same time, if you can reset the entire universe and somehow still exists as you were at present, this implies the universe is not a closed system anyways. I believe this means you can decrease the entropy there but in a more macro bigger picture it increases. That I guess is what the having 2 universes, resetting one and using the other for energy does.
So entropy in the multiverse goes up and you probably destroy 2 universes just to time travel in one.

Haven't they created a big bang in that machine a few years back? The god like particle or whatever?I wonder if that machine could create a new universe here on earth which would eventually eliminate our universe since it'd grow in size. No?

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darkphoenix181 posted...

At the same time, if you can reset the entire universe and somehow still exists as you were at present, this implies the universe is not a closed system anyways.

I don't follow
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teepan95 posted...

I don't follow

If you can escape the reset, it means you left the system. If you left the system, it is not closed.
Otherwise you would always kill yourself and it wouldn't be time travel.
Because you are part of the system.

Are you excited for Matrix 4?

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darkphoenix181 posted...

teepan95 posted...

I don't follow

If you can escape the reset, it means you left the system. If you left the system, it is not closed.
Otherwise you would always kill yourself and it wouldn't be time travel.

If you left the system, that makes you the surroundings, and the entropy flows into you. That would mean the universe isn't a closed system, but it doesn't necessarily mean there's a multiverse. It could just be you + the universe
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teepan95 posted...

If you left the system, that makes you the surroundings, and the entropy flows into you. That would mean the universe isn't a closed system, but it doesn't necessarily mean there's a multiverse. It could just be you + the universe

Well I don't see how you gonna pull off the reset without other universes. You can't really use the energy from the universe you are resetting because it is required to be reset for a successful reset. The same is with everything your body is made of.
With another universe you can do an exchange where you scapegoat stuff from it in place of what makes you. And it can provide the outside force and energy to pull it off.

Yeah OK, that's fair enough
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teepan95 posted...

Yeah OK, that's fair enough

Unless entropy can be turned into energy lol, I have no idea how that would work. Then again none of this is practical, just alright sounding scifi.

You could maybe turn anergy into exergy

If we're gonna go sci-fi, we may as well go all out lol
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teepan95 posted...

Not quite. S = Q/T

And that's my point. Any change that occurs increases (or doesn't change) entropy. It doesn't decrease it at all

It does when you create energy from nothing

which is slightly more difficult than rearranging every molecule in the universe individually

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Tyranthraxus posted...

It does when you create energy from nothing

I'm interested in finding out how you came to that conclusion :D
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teepan95 posted...

I'm interested in finding out how you came to that conclusion :D

The laws of thermodynamics work in tandem to create a situation in which entropy is constantly increasing. Entropy being essentially the waste of energy. When all energy is wasted, entropy reaches a point where it can't increase anymore aka Heat death of the universe.

But if you can create energy from nothing, you're not reversing entropy itself as the wasted energy remains wasted, but you're reversing the effects of entropy by creating new things to waste that weren't there before. Hence the net total ratio of entropy to energy decreases as you continue to create energy.

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IfGodCouldDie posted...

Unless you can only time travel to and from the future of the point in which time travel is created.

This is a possibility.

The instant viable time travel is invented is the instant time travelers will start showing up.

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Tyranthraxus posted...

Hence the net total ratio of entropy to energy decreases as you continue to create energy.

Everything else is correct, and even this sentence isn't wrong. It's just that we measure entropy on it's own, and not in relation to energy. They don't even have the same units!

Either way, instead of going against the second law, you're just increasing the maximum possible entropy the universe can withstand.
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teepan95 posted...

Everything else is correct, and even this sentence isn't wrong. It's just that we measure entropy on it's own, and not in relation to energy. They don't even have the same units!

Either way, instead of going against the second law, you're just increasing the maximum possible entropy the universe can withstand.

Sure but in the context of the original question, rearranging particles such that they appeared in their positions X time ago still leaves you with the entropy problem in that each particle (combined) has less energy than it did even if the position was reverted.

So to deal with the problem of "what about the entropy" the answer is to create energy from nothing to "heal" the effects of entropy.

Thus you've created a moment in time which is exactly like a previous one but just with a larger amount of entropy that doesn't really affect anything.

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Tyranthraxus posted...

teepan95 posted...

Everything else is correct, and even this sentence isn't wrong. It's just that we measure entropy on it's own, and not in relation to energy. They don't even have the same units!

Either way, instead of going against the second law, you're just increasing the maximum possible entropy the universe can withstand.

Sure but in the context of the original question, rearranging particles such that they appeared in their positions X time ago still leaves you with the entropy problem in that each particle (combined) has less energy than it did even if the position was reverted.

So to deal with the problem of "what about the entropy" the answer is to create energy from nothing to "heal" the effects of entropy.

Thus you've created a moment in time which is exactly like a previous one but just with a larger amount of entropy that doesn't really affect anything.

Yeah no, you've lost me here >_>

Talk to me after I take my next thermodynamics exam in April lmao
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