Crack a joke hereWatch
One to screw it in
One to excoriate men for creating the need for illumination
One to blame men for inventing such a faulty means of illumination
One to suggest the whole "screwing" bit to be too "rape-like"
One to deconstruct the light bulb itself as being phallic
One to blame men for not changing the bulb
One to blame men for trying to change the bulb instead of letting a woman do it
One to blame men for creating a society that discourages women from changing light bulbs
One to blame men for creating a society where women change too many light bulbs
One to advocate that light bulb changers should have wage parity with electricians
One to alert the media that women are now "out-lightbulbing" men
And one to just sit there taking pictures for her blog for photo-evidence that men are unnecessary
It is actually just a joke answer, delivered in ruse and jest. The correct answer is 0. Feminists can't change anything.