Silly doubt on relativity

Massive objects cannot travel at c. Your question has no answer.

 

Non physical assumptions lead to nonsense results.

 

This assumption simply cannot be made within the framework of special relativity.

 

Are you serious? Aren't space shuttles massive objects?

 

The civilization I live in makes sense, perhaps you live in a different one.

 

I don't know...have you heard Rick Perry speak lately? :tongue2:

 

The problem with your original question isn't that trains are much slower than space shuttles. The problem is that you asked us to make an assumption that's logically inconsistent with special relativity. The assumptions of SR don't contradict each other, but they imply that massive particles have speeds <c in inertial frames. So when you asked us to assume that a massive object moves at c, you asked us to contradict the theory we were going to use to answer the question.

 

I have a question myself...

I've read a lot of threads where people ask questions about "what would happen..." when some mass/observer is "moving at c".

Why is it that responders pretend to act dumb and pretend that they don't understand the question, saying there is no answer, saying it is a non-physical assumption, does not compute... etc?

These responders know good and well that the uninitiated are asking a perfectly good question, but making a tiny error in their question's rigor when saying "going at c" rather than saying "approaching c", "almost c", "very close to c", "near c", or "99.99999998% of c"...

It only takes an additional phrase in the answer to clarify that "at c" is not possible for masses, but "as close to c as you want to get without getting there" is possible for thought experiments. Then the examination of the adjusted question may be considered physically/mathematically.

Why the snub rudeness to people that don't indicate they know the special insider way to properly phrase high speed mass questions concerning light dynamics?

If this was being done nicely to lead the questioner to the appropriate way to reform the question with alignment to rigor as in the Socratic method that would be fine, but the way people just drop the obtuse one liners and act like they don't have a clue as to what the question pertains just seems obnoxious.

When someone makes the "mass going at c" mistake, why not immediately suggest an adjustment to the thought experimental conditions to correct the lack of rigor and proceed, rather than snubbing the questioner with terse "pretended ignorance"?

 

Agreed. So, why didn't you do this rather than spending your whole post lecturing the rest of us here for being dumb and insensitive to the OP?

 

"...travelling at c for a massive object is down to what is possible..."

That phrases has no meaning to me.

 

Don't you see that I did do just that? The correction is inherent within the criticism. Perhaps the OP now knows how to ask the question in a way that will attract polite and thoughtful answers? And perhaps those answering now have a nice technique with which to address questions that are flawed by lack of rigor?