A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
一个问题如果在计算机上可以快速解决,那么它属于P类问题;如果一个解可以快速验证,那么它属于NP类问题。
创新不仅仅是技术问题;而是你如何应用它来解决现实世界的问题。
The times they are a-changin'.
意识不是一个实体而是一个过程
Global challenges require global solutions.