Pat and Mick decide to spend the weekend fishing. They go off to a large lake and hire a boat for the day. After an hour and not even a bite Pat says “let’s move the boat”, so they move it further down the lake. Another hour passes and still no bites so they decide to move it across the other side of the lake. Within seconds the fish are taking everything. They finally take the boat back having had a great day.
Pat says to Mick” we’ll never find that spot tomorrow”.
That’s OK says Mick “I put a cross in the bottom of the boat”.
“You idiot” says Pat, “we may not get the same boat!”