A mechanical engineer, a computer scientists and a business owner go for a drive and the breaks go out. The driver struggles with the handbrake, but eventually brings the car to a stop. The business owner knows a guy who owns a tow truck who can get them back on the road in no time. The engineer says, "Let me take a look at it first. Let's see what the problem is." The Computer Scientists says, "It was probably a fluke. Let's just get in and see if it happens again."