系统辨识的挑战不仅在于拟合数据，还在于提取有意义且可推广的模型。

我们相信，未来的汽车一定是电动的。

Make decisions when you are ready, not under pressure. Others will always push you to make a decision for their own purposes, internal politics, or some other external need. But you can almost always say, “I need a little more time to think about this. I’ll get back to you.” This tactic is very effective at defusing even the most difficult and uncomfortable situations.