If economics was physics, macro would be cosmology and relativity while microeconomics would be Newtonian mechanics.

如果经济学是物理，宏观经济学是宇宙论和相对论，而微观经济学是力学。

Now let's go back to Newtonian mechanics.

现在让我们回力学。

Newtonian mechanics allow you to coast without too much trouble from Earth to the Didymos system, but hitting the target requires active guidance.

力学让你可轻松地从地球滑行 Didymos 系统，但击需要主动引导。

He struggled at work initially, but he kept plugging away and eventually rewrote the laws of Newtonian mechanics with his theory of relativity.

他最初在工作很挣扎，但他一直在努力，最终用他的相对论改写了力学定律。

To quote him, he said that, " In this Hopi view, time disappears and space is altered, so that it is no longer the homogenous and instantaneous timeless space of our supposed intuitions or of classical Newtonian mechanics."

引用他的话，他说，“在霍皮族人看来，时间消失了，空间也被改变了，所并没有同质和瞬时的永恒空间，而这一思想完全不同于我们的假定直觉和经典力学。