# Debate talk:Relativity-blah-blah

## Comment

The following "restrictions" are stated in the article:

3) Accordingly, all equations of arrangement (I) hold true only for positive values of x,x' (because light is moving along positive x-axis), otherwise if we measure the speed of light we will find that: (c = x/t = x'/t')< 0, i.e. c is negative and the light signal would be moving in the opposite direction of (v), and along the positive x-axis in the same time, which is obviously a contradiction

4) Similarly, all equations of arrangement (II) hold true only for negative values of x,x' (because light is moving along the negative x-axis), otherwise if we measure the speed of light we will find that: (c = - x/t = - x'/t')< 0, i.e. c is negative and the light signal would be moving in the direction of (v), and along the negative x-axis in the same time, which is also a contradiction

These "restrictions" are very obviously not correct. A light ray traveling in the direction of the positive x-axis passes through the origin at time t=0. Therefor for negative x and x', t and t' are also negative. So if we measure the speed c we find that c = x/t = -x/-t > 0

Also, the following statement:

"he used the following equations, and now he assumes that all of them are true concurrently"

is obviously not correct. He does not assume that all of them are true concurrently, he assumes one is true for light rays traveling in the positive direction, the other for light rays traveling in the negative direction. — Unsigned, by: 178.78.227.14 / talk / contribs