Re: lawless physics (fwd)

[Igal Galili <igal@vms.huji.ac.il>]

John,
Would you mind to add few words to your statement, which I admit, I could
not follow:

> I try to make sure that students come away
> from the course understanding the important fact that there is *no* limit
> on "how fast" you can get from one place to another (which is all that can
> possibly matter to a traveler) and, therefore, precious little meaning to
> the notion that nature imposes any kind of "speed limit."

and especially:

> The fact that
> no observer can *measure* a material object to be traveling faster than
> the speed of light is a statement about *measurements* of space and time,
> not about "how fast something can move."

Do you distinguish between "the true movement" and "the measured one"?

> And since one person's "faster
> than light" is another person's "backward in time," all that nature is
> really proscribing is causality.

Do you want to say that the formalism of the special relativity  does not
collapse for v>c and it is only causality that forces us to reject such
speeds for material objects?

Thank you,
Igal.