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?

一个人托举重物，难以挺起；众人一起赶路，比较容易走得快。意谓互助、互动才易于做成事情，强调的是团结的力量。