Around computers it is difficult to find the correct unit of time to measure progress. Some cathedrals took a century to complete. Can you imagine the grandeur and scope of a program that would take as long?
成功不是终点，失败也并非致命，重要的是继续前进的勇气。
We must measure success not just in profits, but in impact.
Solving a problem simply means representing it so as to make the solution transparent.