With experience it all appears to them routine.
I have seen another cartoon where the men hanging outside wonder looking at people sitting at desks and working!
If you consider the heights at which people sit and do the paint job you start reeling!
I have seen the boys and men happily singing away and working there!
The one holding the rope at the top keeps lowering it occasionally to adjust the place of work!
This image does not really give you the feel of the height.
The man is hanging from the wall on the third floor!
I cannot even think of myself at that place.