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8. In nature, the optimum is almost always in the middle somewhere. Distrust assertions that the optimum is at an extreme point.

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Why yes; that is a SLS lox tank dry lab; thank you for asking. There are 39 launches just for refuelling lox/ch4/xenon. 2 MW nuclear reactor. 3000m^2 of radiators. 12km/s of ∆V, conservatively. Can go anywhere in inner solar system; Jupiter at a stretch.

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