None because they know change is inevitable.
What kind of light bulb?
None. They have to convince all the nay-sayers to change it.
Depends on the size of the light bulb.
Scientists do not change light bulbs. Technicians from Facilities Maintenance change light bulbs.
Yes, I know this is a right-wing rant question. No, I do not apologize for answering realistically!
The cogency of your reply is astounding. Thank you for the pseudo-clarification.
Al Gore needs to be consulted and needs to approve this action. lol
None as the sun rises and sets by inself and is to hot to handle and a long reach is required anyway .
Two. One to say the light bulb is too warm, and the other to promote its change. They would then hire someone to actually change it.