Time travel.

[Murkrow]

That makes sense. What I actually don't get is the special theory of relativity Einstein made. How does one twin age less than the other in the same time frame. Even though one is traveling near the speed of light, they're experiencing the same amount of time.

I'm not 100% sure. I think it's because when you speed up, your mass increases (this is only really noticeable near the speed of light), and when something has a lot of mass, it has a lot of gravity. Gravity makes time go slower the closer you get to the object (which is why the same effects would happen if you were near a black hole). So the faster you go, the slower time goes for you. So you age slower, react slower, everything. To you, everything else around you would be going really fast. When you slow down, you wouldn't have aged much but the twin would have aged more because they experienced time normally, where you would have only experienced less time.

 

[SonicNintendo]

i do think it would be possible in the DISTANT future, and something i would do. there are so many things i wish i could go back and do and fix.

 

[Jack_the_White]

The theory of time travel as told by my science teacher is that if you travel faster than the speed of light (which my good friend Al says is impossible), you can see your self in the past because you got from point A to point B faster than the electromagnetic waves we see which are known as light waves.

 

[Teh Ebil Snorlax]

I have a theory on this.

When energy is radiated it travels outwards in a straight line in every direction. Depending on the lifespan of the source and the speed at which the energy moves, it is possible for their to be a constant stream of energy, in other words, a trail not just through space but through time. If there was a way to ride back along this trail to the source, it is possible for a limited type of time travel.

I'd like to point out that I haven't researched all the necessary science to back this theory up, so it's very probable that there's a serious flaw to my theory other than the lack of technology capable of riding back on a wave of energy.

 

[jimmyboyacreman]

Time travel already exists! (hear me out)

When spaceships move incredibly fast, they are found to move through time slightly faster than usual - this is definitely true and widely accepted by science (sorry I couldn't think of any links to back me up)

as for backwards time travel, that creates so many paradoxes that surely it must be impossible? maybe we will invent an anti-paradoxinator...

 

[Automata heart]

time is like a big ball of wibbly-wobbly, timey-wimy....stuff. the doctor has it right.

 

[jimmyboyacreman]

it's definitely hard to grasp - the whole "tree in a forest" thing is puzzling...

 

[Automata heart]

if a tree falls in the forest falls and there is no one around to hear it does it make a sound?
Well, I dont know but one VERY dissconbobulated skrirral is wondering why it's hurtalling towards the ground.

 

[Teh Ebil Snorlax]

Of course if a tree falls and there's no one to hear it still makes a sound. Sound is just vibrations passing through various mediums, just because there's nothing with ears around doesn't mean that a tree falling on the ground doesn't cause vibrations.

 

[jimmyboyacreman]

read this with an open mind

 

[Teh Ebil Snorlax]

I'm not a moron, I'm aware of what the riddle implies. When you assume, you don't make an "ass" out of "u" and "me", you just make an ass out of yourself. I didn't read the page because I know all the stuff that's on it. And I stand by my answer. Matter is matter and just because there's nothing that can perceive it does not mean that it ceases to exist until it is perceived.

 

[jimmyboyacreman]

how do you know that the tree ever "exists"?

 

[Murkrow]

Tree falling in the woods

The way I see it is, if the word "sound" refers to the vibrations then the tree does make a sound. If it refers to the perception, then it doesn't make a sound. While it does generally mean the vibrations it would sound silly in everyday conversation if you said "Hey, what are those vibrations I can hear?" But yeah, I'd say it makes a noise too.

 

[opaltiger]

how do you know that the tree ever "exists"?

oh, cut the high school philosophy bullshit. I know the tree exists because I can see it, I can touch it. I know it exists because I trust that my senses are, in this case at least, telling me more or less the truth, and I trust them because if I didn't I wouldn't have any base from which to perceive the world.

 

[jimmyboyacreman]

some say that the tree is simply a bundle of the sense data that you receive when you see(/ smell et cetera) it

...therefore it doesn't exist when not perceived

 

[Tarvos]

tree's existence is falsifiable

that is what matters

 

[Murkrow]

Anything's existence is falsifiable, why does it matter?

 

[opaltiger]

some say that the tree is simply a bundle of the sense data that you receive when you see(/ smell et cetera) it

...therefore it doesn't exist when not perceived

This is all perfectly irrelevant; what I was replying to was your statement asking how we can be sure the tree ever exists. Stop trying to obscure the conversation.

However, if you'd actually bothered to read the page, you'd have seen that it talks of a bundle of properties, which are not limited to the things our senses perceive.

 

[Teh Ebil Snorlax]

The only thing I'm absolutely sure exists is myself but it is safer to assume that everything else exists because even if solipsism is right, and only I exist, I don't know how to escape the illusion should I decide that since nothing else exists, neither do the consequences of my actions and decide to shank someone I don't like.

EDIT: Also, wiki is not a credible source, you should link to wiki's sources.

 

[jimmyboyacreman]

that page lacked citations...

This is all perfectly irrelevant; what I was replying to was your statement asking how we can be sure the tree ever exists. Stop trying to obscure the conversation.

you wer only really giving your opinion - didn't see any reason to argue with it, so I made a related point...