Hello John,
Normally precision of a measurement refers to the repeatability and
accuracy to the absolute "closeness" to the true value. However, after
studying Heisenberg I gave up caring! I remember the distinction
(between precision and accuracy) by using the dart analogy, a good
grouping has high precision independent of the groups location from the
bull's-eye and good accuracy is the closeness to the bull's-eye. Robin
Hood splitting the arrow of his previous bull's-eye would be great
precision and great accuracy, or did he split the arrow of someone else?
I'll have to adopt the uncertainty principle here as applied to English
mythology but I think you get the point.
knit-pickingly yours,
Luke Coletti
