The term "smoking gun" was originally, and is still primarily, a reference to an object or fact that serves as conclusive evidence of a crime or similar act. In addition to this, its meaning has evolved in uses completely unrelated to criminal activity: for example, scientific evidence that is highly suggestive in favor of a particular hypothesis is sometimes called smoking gun evidence. Its name originally came from the idea of finding a smoking (i.e., very recently fired) gun on the person of a suspect wanted for shooting someone, which in that situation would be nearly unshakable proof of having committed the crime. A piece of evidence that falls just short of being conclusive is sometimes referred to as a "smoldering gun."
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Famous quotes containing the words smoking and/or gun:
“Finishing schools in the fifties were a good place to store girls for a few years before marrying them off, a satisfactory rest stop between college weekends spent husband hunting. It was a haven for those of us adept at styling each other’s hair, playing canasta, and chain smoking Pall Mall extra-long cigarettes.”
—Barbara Howar (b. 1934)
“War can only be abolished through war, and in order to get rid of the gun it is necessary to take up the gun.”
—Mao Zedong (1893–1976)