In reference to the fish problem, I hate to rain on anyones parade, but I think I found why Einstein said 98% of all people would not find the solution. After double checking the problem, I realized a fundamental error in all our logics. By the given of the problem, the German in the green house who drinks coffe and plays soccer CANNOT own a bird, horse, dog, or cat. There is nothing in the problem that says he MUST own fish. This is an outside assumption to the problem made by the reference to the fish. Einstein was always very strict on disreguarding all outside assumtions when facing a problem. Could someone please double check me on this?