Around 2005, they scanned my boarding pass and let me board a wrong flight. I didn't even check the gate properly as I was in a hurry but I found out only when

Around 2005, they scanned my boarding pass and let me board a wrong flight. I didn't even check the gate properly as I was in a hurry but I found out only when I got to someone's seat asking him to leave because it was "my" seat.