How Many IBM Technical Writers to Change a Light Bulb?

Q: How many [IBM] Technical Writers does it take to change a light bulb?

A1: 100. Ten to do it, and 90 to write document number GC7500439-0001, Multitasking Incandescent Source System Facility, of which 10% of the pages state only "This page intentionally left blank", and 20% of the definitions are of the form "A:...... consists of sequences of non-blank characters separated by blanks".

A2: Just one, provided there's an engineer around to explain how to do it.