A confidence trick is an attempt to defraud a person or group after first gaining their trust. Confidence tricks exploit victims using a combination of the victim's credulity, naïveté, compassion, vanity, confidence, irresponsibility, and greed. Researchers have defined confidence tricks as "a distinctive species of fraudulent conduct ... intending to further voluntary exchanges that are not mutually beneficial", as they "benefit con operators ('con men') at the expense of their victims (the 'marks')". Synonyms include con, confidence game, confidence scheme, ripoff, scam, and stratagem. The perpetrator of a confidence trick (or "con trick") is often referred to as a confidence (or "con") man, con artist, or a "grifter". The shell game dates back at least to Ancient Greece. William Thompson (1821–1856) was the original "confidence man". Thompson was a clumsy swindler who asked his victims to express confidence in him by giving him money or their watch rather than gaining their confidence in a more nuanced way. A few people trusted Thompson with their money and watches. Thompson was arrested in July 1849. Reporting about this arrest, James Houston, a reporter for the New York Herald, publicized Thompson by naming him the "Confidence Man". Although Thompson was an unsuccessful scammer, he gained the reputation as a genius operator mostly because Houston's satirical tone was not understood as such. The National Police Gazette coined the term "confidence game" a few weeks after Houston first used the name "confidence man". A confidence trick is also known as a con game, a finesse, a con, a scam, a grift, a hustle, a bunko (or bunco), a swindle, a flimflam, a gaffle, or a bamboozle. The intended victims are known as marks, suckers, stooges, mugs, rubes, or gulls (from the word gullible). When accomplices are employed, they are known as shills. A short con or "small con" is a fast swindle which takes just minutes, possibly seconds. It typically aims to rob the victim of money or other valuables which they carry on their person or are guarding.