What exactly is "exact" (was Clean Singleton Docstrings)

[Gregory Ewing]

Gene Heskett wrote:
> The theory of relativity says that the faster you 
> are going, the more massive you become.

It doesn't, really. The equations only seem to say that
if you insist on keeping the Newtonian definitions of
momentum and kinetic energy in the context of relativity,
which is a silly thing to do when you think about it.
Physicists realised that nearly a century ago, and no
longer use the idea of a velocity-dependent mass.

-- 
Greg