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Zap! with a beautiful flash and appropriate noise, spaceship disintegrated, Beth had Spacewar again. Tho nine-year-olds were lying on the grass of a park near their home, their DynaBooks hooked together to allow each of them a viewscreen into the space world where Beths ship was now floating triumphantly alone..y wanna play again? asked Jimmy. Naw, · said Beth, Its too easy. ·Well, in real space youd be in orbit around the sun. win then: ·Oh yeah? Beth was piqued into action. How could we do the sun? ·Well, uh, lets see. When the ships in space without a sun, it just keeps going cause theres nothing to stop it. 1henever we push the thrust
Alan Kay (Tue,) studied this question.