My first experience of this was when I got into an argument with a cashier.

I remember it was something absurd and kafkesque, I returned a product, and they could only return the money on the card I used to pay for it, but that card has expired.

I was exasperated "Here is my ID, its the same bank account, by the same bank. Use y common sence!"

"But there is message sating it has to be the same card"

"it no longer exists, so how do I get the money back now?"

"There is no button for that"

At that moment, I thought, this person can only do what the computer says. The Developer didn't program the computer.

The develiper programmed the person that will use the computer.