None. They just redefine 'darkness' as an industry standard.
One Brazillion.
All of them actually. Two to hold the ladder and one to change the lightbulb.
None. Mice can't change light-bulbs as they are mere rodents without the physical or mental ability to do so. Not to mention it's much safer for them to pilfer food in the dark.
One? Or two? One?.... Or two?
Microsoft.
Because 7 ate 9
Doesn't matter. They'll just nerf darkness next patch instead.
We can see no need for uninstallation and have therefore made no provision for light bulbs to be removed.
He doesn't. He declares darkness the industry standard.