Young, believing that Brown suffered from arthritis, told her that for $100 he could cure her with a device he had invented. The device was a large box with a series of electric light bulbs along the sides. Brown, after examining the device, agreed to take the treatment, which consisted of placing her hands inside the box for several ten-minute periods. Brown gave Young $100 and went through the treatment. Young is charged with obtaining money by false pretenses. Each of the following, if true, will absolve Young of guilt for obtaining money by false pretenses EXCEPT:
Young honestly believed that the device would cure arthritis, but his belief was unreasonable.  Brown honestly believed that the device would cure arthritis, but her belief was unreasonable.  Young was playing a practical joke on Brown and intended to return the money. Brown was an undercover police officer and did not believe that the device would cure arthritis.