One but you should have seen the bulb it must have been THIS big.
Two. One to hold the bulb, and another to spin the story until the bulb fits.
A hundred but they'll all be competing to be the one to change the bulb and bring light to the world.
Make that change"
When the Doctor changes the timeline, it's usually for a good reason.
Only one; But it takes a WHOLE E.R. room to extract it afterwards. Double joke! "whole... hole." it's a play on words ;)
None it is done by the automatic pilot.
The Master Baiter.
For the halibut.
