Hi,
On 18-Jul-2004, Ada Ma
wrote:

JC Der Koenig wrote:
One example: investigations in the nature of a parabola came
about because
of the need for plotting the trajectories of cannon balls.

Standardisation of machinery parts in the States came about because
people are distributed wide apart and parts that are interchangeable
make life
easier for everybody.
Snip

I'm not fully functional yet, and the first time I read the above I
thought you were talking about interchangeable parts on *people*. G

Take care,
Carmen