Carol and Donna, were doing some carpentry work on a<br />Habitat for Humanity house. Carol, who was nailing down<br />house siding, would reach into her nail pouch, pull out a nail<br />and either toss it over her shoulder or nail it in.<br /><br />Donna, figuring this was worth looking into, asked,<br />"Why are you throwing those nails away?"<br /><br />Carol explained, "When I pull a nail out of my pouch, about half<br />of them have the head on the wrong end and so I throw them away."<br /><br />Donna got completely upset and yelled,<br />"You moron! Those nails aren't defective!<br /><br />They're for the other side of the house