Frequently changing requirements, why does it bother programmers?

For example: "You don't need a gun to kill a programmer, just change the requirements three times."

The following is a summary of the paragraphs of multiple netizens:

You go to the restaurant and sit down.

"Waiter, give me a kung pao chicken!"

"ok!"

—————————— This is called primitive demand.

The chef has already done half of it.

"Waiter, don't put meat in the dish."

"What if there is no meat?"

"As long as you don't put the meat on the line, the other is according to the normal procedure. Not difficult, right? "

"Ok, just a moment, please."

—————————————— Changes in intermediate demand.

Kitchen:

Chef: "Uncle, my meat is back in the pot."

Waiter: "If the customer wants it, you can just pick the meat."

Chef: "OK, uncle."

However, it was picked out little by little.

—————————— The changes are too big, and some of them are reconstructed.

Restaurant:

"Waiter, can I put some yuba in the dish?"

"Ok, this should be very simple."

—————— Underestimate the cost of change.

Kitchen:

Chef: "Fuck you, don't you know that yuba should be soaked in water in advance?" Say it in the middle of the fire? Tell him to wait half a day if he wants to eat yuba. "

Attendant: "Oh, why didn't you say so earlier?"

Chef: "How do I know he wants to put yuba in the kung pao chicken?"

However, I went to soak up Yuba.

—————————— New demand introduces new research and development costs.

Restaurant:

"Waiter, let's add the meat back."

"Didn't you just say you don't eat meat?"

"Now I want it again."

"... ok, just a moment, please. "

———————————— A function point is vacillating.

Kitchen:

Chef: "fuck you, the dishes are overcooked." Do you want me to put the meat? " ? Fortunately, I didn't throw away the meat. "

Attendant: "What do you want me to do with the customer's request?"

Chef: "Can't you refuse him?" Huh? "

Attendant: "They are customers."

——————————— Party A is the uncle.

Restaurant:

"waiter! Waiter! "

"I'm here, how are you?"

"What took you so long?"

"Wait a minute, I'll rush it for you."

——————————————— Change the construction delay period.