In finance, an exotic option is an option which has features making it more complex than commonly traded vanilla options. Like the more general exotic derivatives they may have several triggers relating to determination of payoff. An exotic option may also include a non-standard underlying instrument, developed for a particular client or for a particular market. Exotic options are more complex than options that trade on an exchange, and are generally traded over the counter. The term "exotic option" was popularized by Mark Rubinstein's 1990 working paper (published 1992, with Eric Reiner) "Exotic Options", with the term based either on exotic wagers in horse racing, or due to the use of international terms such as "Asian option", suggesting the "exotic Orient". Journalist Brian Palmer used the "successful $1 bet on the superfecta" in the 2010 Kentucky Derby that "paid a whopping$101,284.60" as an example of the controversial high-risk, high-payout exotic bets that were observed by track-watchers since the 1970s in his article about why we use the term exotic for certain types of financial instrument. Palmer compared these horse racing bets to the controversial emerging exotic financial instruments that concerned then-chairman of the Federal Reserve Paul Volcker in 1980. He argued that just as the exotic wagers survived the media controversy so will the exotic options. In 1987, Bankers Trust's Mark Standish and David Spaughton were in Tokyo on business when "they developed the first commercially used pricing formula for options linked to the average price of crude oil." They called this exotic option the Asian option, because they were in Asia. Exotic options are often created by financial engineers and rely on complex models to attempt to price them. A straight call or put option, either American or European, would be considered a non-exotic or vanilla option. There are two general types of exotic options: path-independent and path-dependent. An option is path-independent if its value depends only on the final price of the underlying instrument.