I bought tickets to take my wife to see Wicked. I got them many months in advance. As the show drew near I added it to a sticky note on my monitor that listed important dates that were coming up. The day finally came and we worked our way through the crowd in the theater lobby up to the ticket taker. When they scanned our tickets the little machine made a *BZZZ* sound. The ticket taker gave a quizzical look at the machine and tried again. *BZZZ* He then handed the tickets back to me. “These tickets were for yesterday.”