This theory has its roots in the classical theory developed by Italian social thinker Cesare Beccaria. His utilitarian approach heavily influenced the criminal justice system and was extremely effective and accepted in the United States and throughout Europe. Throughout the 1960s, Nobel Prize winner Gary Becker, along with political scientist James Q. Wilson, author of Thinking About Crime, helped evolve classical theory toward a more modern theory based on the intelligent thinking process and criminal decision-making. Which ultimately gave rise to what we know today as rational choice theory. Of course, this theory is based on "the idea that crime is a function of a decision-making process in which the potential offender weighs the potential costs and benefits of an illegal act." » (Siegel, 2001). But with this theory, personal factors were also factored into his actions, such as the thrill and simple entertainment of raping and killing these women. Ridgeway clearly saw both sides of his choices, from being a suspect at first, then being dropped as one, then years later, becoming again the Green River Killer convicted of the 48 murders. Another element that is measured before the act is committed is the availability of the target and, of course, during that period in Seattle, it was crazy. According to Battistoni, "the most rampant juvenile prostitution in the country," in the 1980s, according to the National Association for Missing and Exploited Children "and also according to the Seattle Police Department" reported more than 2,000 arrests for prostitution in a single year, an all-time record” which shows the availability of girls. From the beginning to the end of the decades-long Green River Killers spree, he had a lot of desperate girls but the key factor in that no one would look for them for a while (Battistoni). Thus, from this high period of