Good answer Melanie, I agree 100% with what you say. Purists tend to focus too much on one parameter, not realizing that in the big picture, there are lots of things that affect your reading, like temperature! In engineering we typically ignore the bottom 10% and the top 90% and concentrate efforts in between, meaning we don't sweat the small stuff unless it is ABSOLUTELY necessary. A LED that doesn't blink at exactly 1.0000Hz? Who cares, unless your using to to time Longines watches.