The phrase rule of thumb first became associated with domestic abuse in the 1970s, after which the spurious legal definition was cited as factual in a number of law journals, and the U.S. Commission on Civil Rights published a report on domestic abuse titled "Under the Rule of Thumb" in 1982.
A rule of thumb is a means of estimation made according to a rough and ready practical rule, not based on science or exact measurement. What's the origin of the phrase 'Rule of thumb'? The 'rule of thumb' has been said to derive from the belief that English law allowed a man to beat his wife with a stick so long as it is was no thicker than his.
Rule of thumb definition is - a method of procedure based on experience and common sense.
The 50/30/20 rule. This is a popular rule for breaking down your budget. The 50-30-20 rule puts 50% of your income toward necessities, like housing and bills. Twenty percent should then go toward financial goals, like paying off debt or saving for retirement. Finally, 30% of your income can be allocated to wants, like dining or entertainment.Author: Kristin Wong And Lisa Rowan.