Part of my point is that the extra memory required for liftoff claim made by cosmic dave is meant to apply to the modern pc in the argument. If he doesnt understand how the pc works how can he make a meaningful comparison with the AGC? Even then the AGC and a modern pc are very differnt beasts and comparisons are of little relevance. One is designed to be general purpose and one designed to be efficient at performing a small number of tasks with little overhead. I'm rather familiar with the requirements of simulating a 3d lunar lander on the pc as im kludging together one myself and i agree the AGC isnt upto simulating a landing like a pc does, but thats not what it was in place to do. The comparison is meaningless even excepting the misuderstandings.