translation.en: Many years ago I heard a mathematician from Vienna, whose name was Marchetti, explain how the innovation in the military industry -- therefore, secret innovation -- and the innovation in the civilian society are two sinusoids that are kind of opposed.
translation.zh: 很多年前，我听说了一位维也纳的叫Marchetti的数学家， 他解释了在军事生产部门的创新 是秘密的创新。而这一创新和 民间创新就像两条相反的正弦曲线。