That sounds like my Starbucks. I was sitting at a table and overheard a customer complaining that they got their coffee after someone that ordered after them.

That sounds like my Starbucks. I was sitting at a table and overheard a customer complaining that they got their coffee after someone that ordered after them. After the customer left, I heard the Starbucks manager explain to the new hire that the "queue" is very important. It thought "wow, this sounds like my old Data Structures class!"