David Frum @davidfrum
The foot, the ell, the yard, the fathom: all ancient English measurements are based on the human body. Likewise the inch originated as the width of a man's thumb. Hence, rule of thumb, a quick and dirty way for a workman to measure an inch. — PolitiTweet.org
Christina Sommers @CHSommers
@BrandeisU warns students not to use phrase “Rule of thumb.” Why? “This expression comes from an old British law… https://t.co/Y9I5rLVEKx
