Because he saw the salad dressing!
or
Do you want to grab a bite?
or
One; she designs the bulb to crawl up the wall, unscrew the old one, and screw itself in.
or
None. The light bulb contains the seeds of its own revolution.
or
To give us some sort of appreciation for flutes.
Did you hear about that music composer who committed suicide? He didn't even leave a note.
or