| > | THEN find a textbook that discusses relativity.
| >
| > Nope. They all get it wrong, usually starting with the Lorentz
| > Transformations. Only by applying rigour to Einstein's paper can you not
| > derive them. Assuming them isn't rigour.
|
| Ah yes, rigour is more like not being able to spot the
| difference between x' and ksi, right?
|    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/TheSame.html
|
| Dirk Vdm

If x' = (x - vt),
...
"If x' be taken infinitesimally small..." - Albert Einstein.
...
ksi = (x-vt)          /sqrt(1-v^2/c^2)
0 = 0 * sqrt(1-v^2/c^2).
Whoopee... how exciting the difference is.

Androcles