I was around a group of JW's last night, and one mentioned how at their recent KH remodel, done by the RBC, they eliminated their ceiling fans. THe RBC said that the fans were operating at a certain frequency that made it hard to concentrate. They were not sure what the frequency that was referred to was, electrical or the fan blades. Anyway, all their fans were disassembled and were sent somewhere, Mexico was mentioned.
I guess they don't have a problem with frequency in Mexico.