Brain:Explosion

Too long a Monday, too much powerpoint, too much meeting, too much training.  And then I read this:

Accuracy is a statistical measurement of correctness of a measured value, and includes components of random error (variability due to imprecision) and systematic error. It reflects the total error associated with a  measurement. A measurement is accurate when the value reported does not differ from the true value of a known concentration, spike, or standard.

boom.