How many usability experts does it take to change a light bulb?

Complain about not being notified before installing the current light bulb.
Find out who wants to change the light bulb, why he wants to do it, and what does he know about electricity.
Search 5 regular light-bulb changers. She wouldn’t find them, so she would recruit 3 coworkers, 1 friend, and the company’s secretary.
Watching the people changing the light bulbs, she would conclude that:
- nobody notices the tiny text about what kind of bulb should be used;
- the light-bulb changers don’t know how to screw the bulb;
- there is no visual clue of the bulb’s temperature: two people would get burned;
- everyone would prefer changing the bulbs just pushing a button (like Google does);
She would write a 84-pages report about issues changing light bulbs and how to fix them.
The original light bulb would remain unchanged.