And with so much polymer, what we really need is technical nutrition, and to use something as elegant as a tree -- imagine this design assignment: Design something that makes oxygen, sequesters carbon, fixes nitrogen, distills water, accrues solar energy as fuel, makes complex sugars and food, creates microclimates, changes colors with the seasons and self-replicates.
用了那么多聚合物，我们真正需要的是技术养分， 并使用像树一样优雅的东西 — 想想这样的一个设计习题： 设计一样东西会造氧、固碳、 固氮、滤水、储存太阳能为燃料、 制造复合醣和食物、建立微型气候、 随季节变色并能自我复制。