The problem its self

• Discribe your problem.
• what do you want?
• Is the problem a right one?
• Is it necessary to solve the problem?
• Is it emergent to solve the problem?

The source you have

• Search engine.

标签：engine,do,what,right,Thinking,Tool,solve,problem
来源： https://www.cnblogs.com/DWYCWWYHWYA/p/15751625.html