Re: OFF TOPIC -- Ancient Purity

[Paul Hunt <paul.hunt1@virgin.net>]

> John McEwen wrote:
> 
> > Can anyone suggest other devices in common use which have remained true to
> > their first principles since inception.  I would suggest that 50 years
> > should be the minimum time consideration.  I don't include the concept as
> > the basis but rather the actual mechanism.

How about the wheel?

PaulH.