Scientists are shown an observer who is initially stationary but then starts moving away from the light source with speed v:

http://www.youtube.com/watch?feature...&v=EVzUyE2oD1w

INSANE scientists see the light waves overtaking the observer at a slower rate:

c' = c - v

and deduce that the frequency varies accordingly:

f'/f = c'/c = (c - v)/c

SANE scientists see the light waves overtaking the observer at the same rate (Divine Einstein, yes we all believe in relativity, relativity, relativity):

c' = c

and deduce the same frequency shift:

f'/f = (c - v)/c

Pentcho Valev