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Rule of Thumb

Series: Chrysti the Wordsmith
From: Chrysti M. Smith
Length: 00:02:03

The genesis of the phrase "rule of thumb" is uncertain. Read the full description.

Smithchr_small "Brewer's thumb," "wife-beating stick," "approximate inch." These are the three theories offered to explain the origin of the expression "rule of thumb." Chrysti the Wordsmith" two-minute modules are produced at KGLT Montana State University- Bozeman, and broadcast in Montana and Wyoming on Yellowstone Public Radio and Montana Public Radio, and internationally on the Armed Forces Radio and TV Network.

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Piece Description

"Brewer's thumb," "wife-beating stick," "approximate inch." These are the three theories offered to explain the origin of the expression "rule of thumb." Chrysti the Wordsmith" two-minute modules are produced at KGLT Montana State University- Bozeman, and broadcast in Montana and Wyoming on Yellowstone Public Radio and Montana Public Radio, and internationally on the Armed Forces Radio and TV Network.

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Review of Rule of Thumb

I like this series. I'm a lover of words, as I believe the majority of public radio listeners are, so this piece is right up my alley. (Where did 'right up my alley' come from?) Drawing on a wide variety of sources, the producer Chrysti Smith has developed a piece that catches the ear very well -it's smooth, entertaining, and informative. This piece would work well around Keillor's "Writer's Almanac" or anyplace in the programming schedule where two minutes of intelligence are needed. Good job.

Broadcast History

Chrysti the Wordsmith" two-minute modules are produced at KGLT Montana
State University- Bozeman, and broadcast in Montana and Wyoming on
Yellowstone Public Radio and Montana Public Radio, and internationally
on the Armed Forces Radio and TV Network.

Transcript

Rule of Thumb

A rule of thumb is an approximate measurement, or some general standard that we can go by. Where did this folksy-sounding expression come from?
One theory that’s been circulating in recent years posits a 17th century British law that purported to restrict the size of a stick with which a man could legally beat his wife: the instrument of chastisement could be no thicker than the man’s thumb—hence rule of thumb. But legal scholars and word watchers have yet to locate any record of such a code, making a folk tale—some might say a hoax—of this theory.
Another account attaches the expression to brewers who were said to have gauged the temperature of fermenting beer by plunging a thumb into the brew.
But the most logical origin of this phrase makes the thumb a crude measuring device, as the first joint of the digit is an inch or so in length. So, th...
Read the full transcript

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Related Website

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