Mistakes are a part of everyday life, and most of them aren't terribly costly. We wash a new red sweater with a load of whites, turning the hubby's underwear a girly pink. Or someone puts liquid hand dishwashing soap in the automatic dishwasher, sending a cascade of bubbles out the door and across the kitchen floor. But really big plumbing mistakes? Those fall squarely into the category of "Mistakes Best Avoided in the First Place".