Einstein's relativistic theory is conceptually different because different observers may disagree on how hard the push is and which direction it goes, since they can have different ideas of motion.
Einstein's relativistic theory is conceptually different because different observers may disagree on how hard the push is and which direction it goes, since they can have different ideas of motion.
而爱因斯坦的相对论在概念上是不同的，因为推力的大小和方向在不同的观测者看来可能都是不一样的。