A general practitioner, a pediatric physician, a psychiatrist, a surgeon and a pathologist set out for duck hunting one day. Shot guns in hand, they found a nice spot to lay in wait.
As the first duck flew within range, the GP trained his gun then hesitated saying, “Wait a minute, is that a duck? I need a second opinion…” The duck flew away.
A second duck approached the range. This time the pediatrician called dibs. He took aim but just before firing, he noted, “It sure does look like a duck, but what if it has babies?” As he contemplated, the duck flew past.
Another duck came in sight. The psychiatrist who was next in line took aim then hesitated as he thought out loud, “I know that is a duck, but does it know that it is a duck?” Before he could make up his mind, the duck was gone.
After a while, another duck flew within range and this time the surgeon took aim. ‘BOOM!’ and the duck fell into the ground. As the ringing noise in their ears died out, the surgeon nudged the pathologist saying, “Go confirm what it is.”