Did Someone Call a Plumber?
You have a water leak in your basement. You call a plumber in the middle of the night. He comes immediately and fixes the issue. This early action saved you countless hours of cleanup, plus the expense of lost valuables.
A few months go by. You are coming down with something. You have the chills, and it’s the middle of the night. What do you do? Why, call the plumber, of course. When you had a problem in the middle of the night before, he fixed it. Duh!
The plumber arrives. Your radiators aren’t putting out much heat.