Fill in the blank: Bill Gates invented a solution for ________.
Man comes to the vet with his camel, he says his camel can't walk straight anymore, the vet tells the man to put the camel on a flat patch of ground. They both walk there, the vet gets two stones. The man asks what he is going to do with the stones, vet says "you just watch". The vet spreads his arms with a stone in each hand and suddenly BAAAM the vet slams both stones on the camels private parts. The vet then says, see he can run in a perfectly straight line.