Frederick Williams wrote: > > quasi wrote: > > > > netzweltler wrote: > > > > > >Meaning, that the notion of infinite speed is nonsense, > > >right? > > > > Well, I surely don't know how to make sense of it (but > > I'm willing to be educated). > > Would it do to say that if a material object moved a non-zero distance > instantaneously, then it moved with infinite speed?
Shmuel Metz's post a little down stream shows that (accepting Einsteinian relativity) this won't work. If a particle is moving along the x-axis at speed v from 0 to 2 and from 3 to 4 at speed v, but when it gets to 2 it disappears and simultaneously reappears at 3, then simultaneity causes problems.
-- When a true genius appears in the world, you may know him by this sign, that the dunces are all in confederacy against him. Jonathan Swift: Thoughts on Various Subjects, Moral and Diverting