A rule of thumb is a principle with broad application that is not intended to be strictly accurate or reliable for every situation. It is an easily learned and easily applied procedure for approximately calculating or recalling some value, or for making some determination. Compare this to heuristic, a similar concept used in mathematical discourse, psychology, and computer science, particularly in algorithm design.
Read more about Rule Of Thumb: Origin of The Phrase, Thumb As Measurement Device, Thumb Used For Regulation, Examples of Usage
Famous quotes containing the words rule of, rule and/or thumb:
“It seems to be a rule of wisdom never to rely on your memory alone, scarcely even in acts of pure memory, but to bring the past for judgment into the thousand-eyed present, and live ever in a new day.”
—Ralph Waldo Emerson (1803–1882)
“The only rule is, do what you really, impulsively, wish to do. But always act on your own responsibility, sincerely. And have the courage of your own strong emotion.”
—D.H. (David Herbert)
“Give a lift to a tomato, you expect her to be nice, don’t ya? After all, what kind of dames thumb rides, Sunday school teachers?”
—Martin Goldsmith, and Edgar G. Ulmer. Charles Haskell, Jr. (Edmund MacDonald)