[Lerc]

Would you prefer to have:

The plumber who turned up leave without fixing the problem,

The plumber fixing something that he didn't know how to do by looking up the answer.

The plumber attempting to fix something that they didn't know how to do.

While it's great to have the plumber who knows how to do everything, they are rare and in high demand, so cost way more than you can afford.

[bigfishrunning]

I would prefer to have a plumber with some kind of reference that doesn't just make shit up 10% of the time -- plumbing mistakes are insanely costly (i once owned a house that was destroyed by a plumbing mistake that was made by a previous owner)