Cows, grain, the Nile and a swamp; what do all of the details mean?Why does Yosef give advice when he's been asked to interpret?What actually is Yosef's advice?Why does dream interpretation qualify Yosef to run a large country and oversee its economy?Where did they look for him and why?Why are they accused of being spies?How does their reply -- "we are brothers" -- resolve Yosef's accusation?