No Time Travel, Sorry

MOBE2001 writes "The bad news is that time does not change. Spatial velocity is given as dx/dt. Velocity in time(dt/dt) is nonsensical. As simple as that. In other words, no time travel to the past or the future, no motion in space-time, no wormholes and no hanky-panky with your great, great grandmother. There is only the changing present, aka the NOW. The good news is that distance is an illusion and we'll be able to travel instantly from anywhere to anywhere."

Comments

The e-mail I sent to the editor was ignored.

[Cujo]

This guy is a pseudo-scientific moonbat. Please don't waste your time with the not-so-FA.

Re:The e-mail I sent to the editor was ignored.

[slavemowgli]

Note the URLs of the articles linked:

http://www.rebelscience.org/Crackpots/notorious.htm
http://www.rebelscience.org/Crackpots/nasty.htm#Spa ce

(emphasis mine.) That alone should make it pretty clear that this isn't meant to be taken seriously. Oh yeah, and the story got the "foot" icon, too, so even Taco got it. :)

Idiotic

[Zeinfeld]

The guy who wrote the article simply does not understand the question that is being debated by the likes of Feynman et. al.

Everyone agrees that practical time travel is at the very least exceptionally unlikely. But whether our model of the universe excludes the posibility of time travel is another matter entirely.

Note that even if our model of the universe allows for time travel it does not mean that time travel is possible. Not least because we know that our model of the universe cannot possibly be completely right. Quantum physics provides an excelent model of the universe at a large scale, relativity provides a good model at the cosmological scale. The problem is that the two models are incompatible. At leas one of our models must be wrong. Most likely they are both approximations.

The other issue that the writer does not seem to grasp is that the ability for matter to travel through time and the ability of information to travel through time are very different issues. For meaningful time travel it has to be possible for information to move backwards in time and not just matter. Otherwise what would come out the other end would be a random soup of quantum particles, not the time traveller. This is the problem with black hole time travel, the most that can come out the other side is a random soup.

The 'proof' provided by the author only demonstrates that he does not have the slightest understanding of the subject he is pontificating on. dt/dt = 0??? No, all that shows is that the dimensions of the two quantities are the same. Besides x/x = 1 in most algebras.