2002-06-13 Time travel forward in time (into the future) would be possible in the sense that it creates no paradoxes. Travel backwards is impossible as it creates paradoxes, and nature abhors paradoxes. If a paradox is created by the a sequence of events, then that sequence is invalid and can not occur.
The paradox created by negative time travel is that it would be possible for a traveller or even an inanimate object who/which would go back, by their /its very presence in the past, would change the present. Since the present as we know it exists, it can not be made to unexist. A simple example would be to go back to the time your grandmother was a child and kill her. Thus making it impossible for any of her descendants to be born, including the time traveller. Without the time traveller being born, there would be no one to return to the past and the grandmother would not die, but live to produce her offspring. Thus the time traveller is born, and is able to go back, killing her.... etc. As you see an endless illogical loop is created. As a result, it is not possible to go back in time. Another interesting thing is that forward time travel creates no paradoxes, but also might be impossible. To travel forward in time, one must also travel forward in space as well. The earth is moving in space, and if you are to travel to a point in the earth's future, you must also travel through space and be at the spot where the earth will be in that time, or else you will materialise in space or maybe inside of something if it is occupying that space at the moment you are trying to. If I am not mistaken, to travel in both time and space together ( in the sense of time travel) would require an infinite amount of energy. Thus making it impossible. It looks like you folks will have to travel through time the way nature has intended it. As you now experience it. John ----- Original Message ----- From: "M R" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Thursday, 2002-06-13 18:48 Subject: [USMA:20395] Fwd: Re: Yesterday's Startrek on BBC 2 > Few months back, I had an argument with my friend > about the time travel and back to the future concept. > > He said that we will be in same time, if we travel > in the speed of light. > My argument is this > 1. even if our spaceship is to move a few meters, > it is going to take atleast few picoseconds. > 2. its going to take few minutes to make a sandwich. > > The duration taken to do something is called time. > > Is the concept of 'time' a real thing like distance, > electricity, etc or just a virtual thing. > > Madan > > > --- kilopascal <[EMAIL PROTECTED]> wrote: > > From: "kilopascal" <[EMAIL PROTECTED]> > > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > > Subject: [USMA:20394] Re: Yesterday's Startrek on > > BBC 2 > > Date: Thu, 13 Jun 2002 18:21:02 -0400 > > > > 2002-06-13 > > > > Han, > > > > Out of curiosity, was this the old Star Trek with > > James T. Kirk as Captain, > > or the newer ones with Jean-Luc Piccard? > > > > Quite frankly, I don't see any error in a planet of > > a Star Trek series > > having a temperature of -291�C. In Star Trek > > fiction, a lot of rules of > > physics are broken. I've seen episodes where they > > even went backwards in > > time, which we all know is impossible. And what > > about "warp" speed; > > travelling faster than light? Another > > impossibility. Again, there is the > > transporter. I highly doubt that such a device will > > ever exist. Just think > > of the paradoxes that will result if such a device > > ever did exist. Can you > > think of more impossibilities? > > > > So, in the realm of Star Trek, if Planet Fantasyland > > has a temperature > > of -291�C, it has to be true. > > > > As for this medium, what some people won't do to get > > attention. I'm > > surprised a radio station would give such a loony > > tune the time, unless they > > were all looking for a good laugh. Just out of > > curiosity, how long does it > > take thought waves to travel from earth out into > > space? Do they travel at > > the speed of light? Do they pass through wormholes, > > and thus arrive sooner, > > or are they instant? How does it work? > > > > I haven't received any messages either. I just > > figured everyone ran out of > > things to discuss, got bored and as a result, > > nothing is posted. > > > > John > > > > > > > > > > > > ----- Original Message ----- > > From: "Han Maenen" <[EMAIL PROTECTED]> > > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > > Sent: Thursday, 2002-06-13 01:43 > > Subject: [USMA:20393] Yesterday's Startrek on BBC 2 > > > > > > > A mistake was made in yesterday's Startrek on BBC > > 2. The ship was orbiting > > > around a planet. The temperature was -291 degrees > > Celsius. That would have > > > been a breakthrough: temperatures below absolute > > zero. - 18K! > > > Years ago I was listening to a program on the > > radio about astrology and > > > mediums (not that I accept this trash!). And this > > program furnished once > > > again a reason to reject it. Someone who was being > > interviewed claimed > > that > > > he was a medium who mediated between Earth to the > > inhabitants of a planet > > > ion another galaxy. On this planet the temperature > > was -900 degrees > > Celsius! > > > Yes, indeed! > > > > > > BTW: I have not received messages from the server > > for more than 12 hours. > > I > > > wonder, has it crashed? > > > > > > Han > > > Historian of Dutch Metrication, Nijmegen, The > > Netherlands > > > > > > > > > > > > > > __________________________________________________ > Do You Yahoo!? > Yahoo! - Official partner of 2002 FIFA World Cup > http://fifaworldcup.yahoo.com >
