It's a load of crap, because:
Muons originating in the upper reaches of the atmosphere are accelerated
under gravity toward the ground. They should decay long before they reach
the ground, but they live long enough to get to sea level. Since I don't
give hoot about the muon's frame of reference, it is my frame of reference
that I make measurements in, the muon has travelled an enormous distance in
a very short time, exceeding the speed of light many times over. The muon
may think it didn't exceed light speed, but it did by my measurement in my
frame of reference.
Hence relativity's speed limit is a load of crap. QED.

It's a load of crap, because:
In SR, the vector addition of velocities V = v+w,  is replaced by the
composition of velocities V = (v+w)/(1-vw/c^2).
In Einstein's equation
1/2[tau(0,0,0,t)+tau(0,0,0,t+x'/(c-v)+x'/(c+v))] = tau(x',0,0,t+x'/(c-v))
Reference :
http://www.fourmilab.ch/etexts/einstein/specrel/www/
he has used the vector addition of velocities in the time x'/(c+v) where he
should have used x'/(c+v)/(1-cv/c^2) = x'/c.
You have only to set v to almost c to see why this is needed.
Hence
1/2[tau(0,0,0,t)+tau(0,0,0,t+2x'/c)] = tau(x',0,0,t+x'/c),
from which tau = t.
Einstein did not drive time dilation in self-consistent manner, and
relativity is  load of crap.

It's a load of crap because:
Theorem. Time is universally absolute.
Proof:
Suppose it were not. Consider two identical clocks a and b in
contra-revolving but otherwise identical orbits in satellites about the
Earth. Each agrees with the time of the other,
tau = t, dtau/dt = 1,
each agrees the rate of change of time is less for the other,
dtau/dt < 1
for each orbit.
(tau = t .AND. d(tau)/dt < 1) = FALSE.
Hence the theorem is proven by reducing it's contradiction to an absurdity,
and time dilation, hence relativity, is a load of crap.

Perhaps you, Anderson, can't or don't want to understand why it is a load of
crap, but if you think that analysis is wrong, show why. Put up or shut up.
Oh, I forgot the obligatory exclamation marks.
Put up or shut up!!!!!!!!!!!!!
Androcles