The nightmare is generated by the so called twin paradox and its various
versions where one clock is at rest while the other travels but returns and
the comparison should show that the clock at rest has been FASTER. This
idiocy (Idiocy 2) was in fact the sensation in Einstein's 1905 paper. It
supplanted another idiocy (Idiocy 1) following directly from Lorentz
transforms and stating that either clock measures the other to be SLOWER.
The success of Einstein's theory of relativity (and the failure of
Poincare's) is due to the fact that Idiocy 1 is an obvious absurdity
whereas Idiocy 2 is not - the Einsteinian can endlessly defend it by
referring to irrelevant evidence etc. However Idiocy 2 still generates a
nightmare since Einstein claims it is a corollary of Lorentz transforms
whereas in fact it is not. Tremendous work has been done by Einsteinians in
order to mask the problem - this work was started by Einstein himself in
Chapter 23 in his "Relativity". Yet the truth will become evident one day:
Lorentz transforms predict that either clock measures the other to be
slower but by no means predict that one clock is faster than the other.
Einsteinians will immediately repent and devise some other theory
containing more lies and bringing even more money.