The best things in life are free.

As data grows, so does the complexity of managing it. The challenge is to keep the systems simple and efficient.

The only thing you absolutely have to know is the location of the library.

如果你丢失或忘记带充电线、适配器或充电器，请问问酒店前台。现在大多数酒店都有一个抽屉，里面装满了别人留下的充电线、适配器和充电器，可能就有你丢失的那个，你通常可以借来用用。

技术的边界在于人类的想象力。