You have finished grocery shopping, wheeling a cart full of grocery stuffs towards the cashiers. All you can see are people waiting in long line. But hey, you found a line that has less people waiting, so you thought you got the lucky spot.
BUT,
Unluckily, the customer in front of you started to question and argue with the cashier about the price of an item. The cashier has to call the supervisor to come. Then supervisor tried to explain to the customer. The customer disagreed. No way! You were still waiting impatiently while watching the others (who were previously waiting at the other line) leaving with their grocery.
Oh my, what an unlucky day.
Lesson 6 = Sometimes it is not a bad idea to stay where you are right now.
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