Money exchanges. Think about this: you take dollars from now, which due to inflation are worth way less than they used to be (eg: cheaper, an hour's labor can get you more of them now than they used to). You take those dollars back in time, to when they're worth more, pop them in a bank account and pick them back up in the future. You could theoretically do this ad infinitum. The entire monetary system would collapse. Also, the stock markets would collapse because, knowing the future, or rather the past, you can go back to the past, invest, and return to the future. But time travel, once invented, would never be able to remain exclusive to one person, and it would have to do so in perpetuity.
Therefore, the invention of time travel would be disastrous to economies of the past, present, and possibly future.
This does have a valid point BUT you have to remember that our dollars or most of them nowdays have a date stamped on it somewhere. So if you took a dollar that said 1997 on it, the dollar would be considered counterfeit back then unless you travelled within the dates of the money you have and now.
Now the actual topic of time travel. Its the ripple effect. At the point you go back in time, everything you say, do, breathe, step on, come across will send a 'wave' of differences in the time line of your 'present' which now has become your future. But your 'present present' is now different because it is now your 'present future'. It will always be the ripple effect same as throwing a rock into a pond. It looks the same, but the undercurrents are different because one rock has moved.
I hope I made sense and didn't live up to my name TOO much
**this topic made my brain hurt a bit. so back I go to posting nonsense**
Good morning, son
In twenty years from now
Maybe we'll both sit down and have a few beers
And I can tell you 'bout today
And how I picked you up and everything changed
It was pain
Sunny days and rain
I knew you'd feel the same things...
So basically, once you travel back in time, you're lost to the present forever. Therefore, there is no way to conclude that time travel is successful, therefore the whole project will be abandoned as a fatal pasttime, but only in the current present.
Now you're talking!!! Of course, the mere fact that the time traveler didn't return allows one to believe that something did happen. Perhaps they liked the past too much to return to the present. OR, something terribly wrong happened.
Originally Posted by NeverNeverland
Mmm, Scott Bakula and his effect.
Wasn't it "proven" that you can't time travel?
Try telling that to Ziggy.
ALSO, too add into the mix: The funniest time travel hoax site (because people still believe this man traveled through time): http://www.johntitor.com/
time travel in theory can be good and bad... by saving seone you alter the time stream into a different direction.. take one slight change.. you could alter history forever.. in another theory.. whatever you do it will fix itself...
^ That book is now a movie, for those with too much ADD to read- I saw the preview for it this weekend. Although I fully expect it to be crappy. Timeline by Micheal Crichton was a good book on time travel as well, but the movie was horribly lame.
THE laws of physics seem to permit time travel, and with it, paradoxical situations such as the possibility that people could go back in time to prevent their own birth. But it turns out that such paradoxes may be ruled out by the weirdness inherent in laws of quantum physics.
Some solutions to the equations of Einstein's general theory of relativity lead to situations in which space-time curves back on itself, theoretically allowing travellers to loop back in time and meet younger versions of themselves. Because such time travel sets up paradoxes, many researchers suspect that some physical constraints must make time travel impossible. Now, physicists Daniel Greenberger of the City University of New York and Karl Svozil of the Vienna University of Technology in Austria have shown that the most basic features of quantum theory may ensure that time travellers could never alter the past, even if
they are able to go back in time.
I tend to subscribe to the quantum theory of the multiverse, which simply put says that there are infinite timelines, that increase constantly with every possible outcome of every possible decision or action anyone or anything can make. This negates the entire purpose of time travel, because it leads to two possible outcomes:
a - Time travel to alter an event (and really, your mere presense makes a new timeline) merely creates a new timeline, and jumping back to the "original" timeline will reflect no changes, because you're still on the timeline you left from.
b - You are unable to make changes to "your" timeline, because it is already written. This causes time itself to simply spit you out of the continuum. Hello oblivion!
Faced with those choices, I'll stick with my imperfect world, thank you!
"Nature abhors a paradox"
Honor those who fall under the sword.
But pity the warrior who has slain all his enemies.
Seriously guys, time travel is only possible if you can get up enough speed by slingshotting yourself around the sun and only a good idea if you need to bring humpback whales back to the future to save the world. Or possibly if you need to follow a Borg sphere back in time so they don't prevent first contact. Any other times, it totally flips off the Prime DIrective and we all know that's not Kosher.
The King is back and he's ready to kick some tail. Do not mess with a mouse in black.
OK - to dismiss the people that say that time travel is not possible:
It is in fact possible to travel back in time, just not practical with today's technology. I know, I've studied it.
Whenever you look up, into the night sky, you are looking into the past. Light travels at a given speed, the light that you are seeing from those stars, left those stars a LONG time ago. The star clusters/patterns that we now see, are really not there right now, we are seeing what their position/orientation was in the past. If anyone on a planet orbiting those stars happens to be looking back at the Earth, depending on their distance from our planet, they could be seeing dinosaurs.......
Time Travel? It's easy, build a ship that can travel faster than the speed of light, leave the Earth, accelerate multiple times the speed of light, slow down, turn around & travel back to Earth at sub-light speed. If you traveled far enough away at faster-than-light speed, you will be reaching the Earth at a point before you left.
Problems with this theory? With present technology, building the ship is the challenge........Propulsion technology is in it's infancy. You could use a nuke to accelerate a ship faster than the speed of light, but the shielding would have to be very well built & designed. Not to mention guidance systems - I worked on a project 21+ years ago that was called 'StarTracker' (at Northrop Electronics) - it was intended to allow guidance by computer tracking fixed star positions (remember, this was in the days before GPS technologh). In the Time Travel equation, even that technology would be frought with problems - you travel back in time, star positions move - you'd need a computer to recalculate actual versus intended star positions to determine where you are......
Money - that's easy, take an example from Doc in BTTF, by a lot of old money from a Numismatic dealer.
What to change? Anything your conscience will allow you to do (personally I'd buy stock in something called MicroSoft in the past).