I tried explaining to someone how using a telescope is actually looking back in time and I got the "my cats breath smells like catfood" look in return.

:1orglaugh
You don't need a telescope to look back in time.
You always look back in time :)
Not that that would make any more sense to that person probably.

Cute video.

Imagine it has been shown to jews some 3000 years ago what it would be written in the Bible today? :)

Quantum entanglement is not time travel.

http://www.livescience.com/19975-spo...anglement.html

Etc.

Time travel is proven, but you can only go forward you can't go back

I would be not so sure, since we didn't understood much of the whole thing yet :)

However, let's assume you got a time machine which can bring back, you need the time machine there in the past too, as to teleport in the past the machine which teleports yourself it is more difficult to think of.

So let's say someone builds a time machine in 2015 and puts it in a secret place underground inside a mountain which you know can't be touched in future. Let him go forward in time, he re-appear in same place in 2030, then let him go on 2050 and so on. Then let him go back in 2030 and 2015 is ok. But he can't go back in 2014 or anyway before the time machine it existed there.

This would explain why if in the future the time machine it will be invented, they did not came here to tell us. It could be in the future, someon invents the time machine then immediately (on that same second), infinite people from the future will come from the past into that first time machine box in a loop changing future , so fast until one of the many futures in the loop includes a world destruction by nukes (very probable in such a loop), which would happen as soon as possible so in the very next second after the time machine it is built.

Accordingly, it is very likely the same day someone evern built a working time machine, the world it will end, by near-infinite loop of future people abusing this by return back in time to change something until one of these future includes end of all, which stops loop and all of humans from doing this.

Nice selective copy and paste

Thanks :upsidedow

I knew what I was going to say beforehand, but yeah selective copy/paste is easier :321GFY

Well a more extended version of copy and paste it is there:

http://arstechnica.com/civis/viewtop...?f=26&t=171842

Also reposted here, post #18: http://dis.4chan.org/read/sci/1204266202

Still this is outdated information, and not strictly related to time travel.

lol. I was really just trolling to find the smart ones. Turns out you're one of them :upsidedow

Well I didn't googled for your post until the guy said it was a copy & paste.
Feel free to google my posts :)

My bad for trolling once in a while.. :upsidedow

Intradesting..! I stand corrected, and, I just thought of a simple way to test it.

Have you ever heard that astronauts and even air travellers age slower due to their speed? (see http://en.wikipedia.org/wiki/Hafele?Keating_experiment). Clocks move slower when you move faster. If your twin brother takes a 15 hour flight he is about 47ns younger than you when he lands.

Instead of you and your brother, they could entangle a pair of photons, send one of them on a 15 hour flight. When it lands, that photon is now 47 nanoseconds in the past. They could then do a quantum teleportation experiment (http://en.wikipedia.org/wiki/Quantum_teleportation), and if it works, would be I guess, time travel.

does not exis