Sorry, I don't follow that.

questions:

a) what is light travel time? Do you mean "c"?

IMO, "c" is the upper limit of an object becoming expressed in physical reality. It's against the law of physics to go faster. It is a true constant, the boundary between physical and meta-physical (or "real" and "unknown")

b) Yes, traversing (measuring) a meter creates a duration of time, depending on the speed you are traversing that meter, but a meter has no intrinsic connection to time.

Can you measure me a meter of time? And can you give me the time of a meter?

Motion is the causal force or function, traversing a meter is causal to the creation of time, motion is in space and if at a steady rate, causes the emerge of time (a duration) which can be associated with that meter. That is the definition of a world line , IMO.

Hopefully you recognize that Motor Daddy is an auto mechanic who found his way here, surprised to discover that there is a field of physics called Mechanics which has nothing to do with the difference between a #1 and a #2 screwdriver. For some reason he likes to join physics discussions and play the crank.

Question: in your accounting work, did you ever encounter derivatives (from differential calculus)? That's the level of material that has Farsight stumped. Like Motor Daddy, he is out of his element here. He doesn't have the aptitude of a car mechanic, but he seems to have the vocational training of a person in advertising--one who keeps trying to pawn useless junk thru the manipulation of words rather than through science.

Motion is defined in kinematics in terms of differential equations. It can be linear or rotational. The simplest form is linear velocity, which is

**the time rate of change of position with respect to time**. The expression is v = dx/dt which is called a

**first order derivative** of position with respect to time. Linear acceleration is defined as the first derivative of the velocity, a = dv/dt, which yields the second order derivative of position with respect to time: d[sup]2[/sup]x/dt[sup]2[/sup].

Thus the nonsensical remark that space and time are somehow unrelated simply because v = dx/dt rather than v = dt/dx (we have to interpolate here since Farsight isn't able to think this through) is just a bizarre attempt to parade his ignorance of first principles. Understanding those first principles is the level of competency normally required on the college entrance exams for students attempting to enroll in a science or engineering degree plan.

Note, we could have just as well cast this in terms of linear acceleration, or angular velocity, or angular acceleration. None of this even crossed Farsight's mind, because the advertising vocation doesn't even use college entrance exams, unless it's taken under a college of Business--which certainly doesn't expect its students to understand kinematics.

Compounding absurdity with ignorance is Farsight's pretense about understanding electromagnetics and relativity, declaring that nature must be this way or that, without ever having developed even the first year skills in differential calculus that are necessary to understand the upper division and grad school level of topics he pretends to have conquered.

Your other questions, like "does this moment in time last forever" are of a different class. Here we're no concerned with the derivative of space with respect to time, but rather, the effect of removing the time dimension from the 4D graph altogether. I think if you look at this more closely, you'll come to understand that it's equivalent to "viewing" the continuum under the constraint that time (for the observer) is standing still. In that context every moment that ever is, was or will be -- is frozen in time, in that condition Dinosaur called "the static universe". This is why we have to classify time as a dimension. None of the kinematics Farsight is alluding to "on the cool" even begins to engage until

**after** the Big Bang.

I think if you change your language a little you can close these thoughts accurately. Instead of saying "motion creates time" you can now say "the derivatives of position with respect to time"

**defines motion**--within the spatial and temporal dimensions of the inertial reference frame.