Leonardo Boselli wrote:
> This said I have to say that the physical law that say that you
> cannot have an exact measurement is valid only for continuous
> measurements.
Very good point, Leonardo. After all, for example, people play bridge and
other card games with precisely 52 playing cards.
On the other hand, though, one could argue that discrete counts are not
measurements.
I believe that absolute precision in the counting of a very large number of
discrete items is possible. However, achieving it may not be economically
justifiable.
Bill Potts, CMS
San Jose, CA
http://metric1.org [SI Navigator]
