How many Science-Fiction writers does it take to change a light bulb?

Just one. But he couldn't reach it so he set off to fetch a step ladder. However, as was leaving the room, a temporal anomally appeared in the doorway and he met himself coming the other way. Realising he could use this to good advantage, he stood on his doppleganger's shoulders and, without checking that the power was switched off, proceeded to change the bulb which burst as he pulled it from it's socket. A power surge shot through him and ran to earth through the metal hat stand which his doppleganger was using as support. The resulting explosion blew them both into a parallel dimension, where they are now running a travel agency specialising in Weekend getaways to Alpha Reticuli.How many Science-Fiction writers does it take to change a light bulb?just got back from a weekend break to Alpha Reticuli and we had a terrible weather, -58C and snowing, suggest the east side of the planet if you want the sun.How many Science-Fiction writers does it take to change a light bulb?That wasn't funny.How many Science-Fiction writers does it take to change a light bulb?coolHow many Science-Fiction writers does it take to change a light bulb?That was about as funny as cancer!How many Science-Fiction writers does it take to change a light bulb?ha ha, I liked itHow many Science-Fiction writers does it take to change a light bulb?hahaHow many Science-Fiction writers does it take to change a light bulb?*AHAHAHAHA!*

I get it:

Insider sci-fi joke right?

:-)