In every field of expertise, there's information that's common knowledge inside of the field and anything but to the rest of us. Today, we want to know about the information from (or about) your job that would most surprise people to learn.

Maybe you want to clear up some misconceptions about your job, or maybe you simply want to fill in some knowledge gaps that you've noticed from outside of your field. Maybe you want to give us a favorite insider tip about anything ranging from when to book your air travel or the best way to safely snack in the lab.

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Whatever it is, enlighten the rest of us about it in the comments now.

Image: Seattle Municipal Archives.