rudd fears he is being made fall guy for batts, page-17

"pugsley

Have you ever been in the ceiling of a house? Particularly one that been there a while."

Yes, plenty of times.
Also I've placed insulation in five or six residences that I have owned and yes I've worked with electricity in past occupations. One occupation was TV and electronic, electrical repairs. Another air conditioning installation. One as an electrical mechanic working with controls.
As it happens I have worked alongside qualified electricians whose gung ho work practices left me disgusted, unwittingly leaving traps for those who follow. So will freely admit that there are risks in working in a ceiling as there are risks with many occupations.
Changing the oil in a car can lead to death as can crossing the road.