When three people went to the grocery store to buy things, the boss asked the first person, "What are you going to buy ?"
The first person said, "I want to buy a bag of peanuts ."
The boss moved the bullet and climbed to the warehouse and gave him a bag of peanuts.
The boss asked the second person, "what do you want to buy ?"
The second person said, "I want a bag of peanuts ."
The boss said, "Why didn't you say that ?"
At this time, the boss was a little uncomfortable, but still had to get it, so he moved the ladder to the warehouse to get it.
When he crawled, he asked the third person: "Do you also need a bag of peanuts ?"
The third statement is "no ."
The boss took a bag of peanuts to the second person and collected the ladder.
Then he asked the third person, "what do you want ?"
The third person said, "I want two bags of peanuts ."
----- The demand analysis makes it clear that there are fewer detours.