According to the FBI Bank Crime Statistics, there were nearly 4,000 bank robberies in the United States in 2014. The FBI claims that banks have made themselves easy targets by refusing to install clear acrylic partitions, called bandit barriers, that separate bank tellers from the public. According to a special agent with the FBI, "Bandit barriers are a great deterrent. We've talked to guys who rob banks, and as soon as they see a bandit barrier, they go find another bank." Despite this finding, many banks have been reluctant to install these barriers. Wouldn't banks have a strong incentive to install bandit barriers to deter robberies? Why, then, do so many banks not do so?