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:
“There were some schools, so called [in my youth]; but no qualification was ever required of a teacher, beyond “readin, writin, and cipherin,” to the Rule of Three. If a straggler supposed to understand latin, happened to sojourn in the neighborhood, he was looked upon as a wizzard. There was absolutely nothing to excite ambition for education.”
—Abraham Lincoln (1809–1865)
“The daughter of debate, that eke discord doth sow,
Shall reap no gain where former rule hath taught still peace to
grow.
No foreign banished wight shall anchor in this port;
Our realm it brooks no stranger’s force, let them elsewhere resort.”
—Elizabeth I (1533–1603)
“Your small hands, precisely equal to my own—
only the thumb is larger, longer—in these hands
I could trust the world, or in many hands like these,
handling power-tools or steering-wheel
or touching a human face ...”
—Adrienne Rich (b. 1929)