"You have to organize your thoughts carefully. Only the three humans can row the boat. Then, you have to memorize all the things to look out for. When the peasant is away, you can't leave his wife with the shepherd. When both the peasant and his wife are away, you can't leave the shepherd with the meat. When the shepherd is away, you can't leave the sheep with the veggies. You also need someone to watch the cow, but any of the humans can do that. Still, I guess the meat is the real key to the whole thing."