capacitors vs discs

In the early 1900's, human backs were said to be made up of "capacitors". Scientists, citing rapidly approaching computer technology and the use of "capacitors" on motherboards, decided around 1910 that "discs" would be a better name to eliminate confusion between motherboards and human backs. It's not known why the confusion between human backs and floppy disks, CD's, and DVD's was deemed acceptable.