Cold analysis will tell you the world comes up with new stuff faster than anyone can keep up with. Not knowing everything is pretty much a given.
Getting a grasp of what I don't know is something I'm working on instead. Not shying away from saying "I don't know (anything about) this" is probably one of my strong points. Because nothing hurts a project more than pretending you know the subject, only to go over time and budget and come up with a half-assed solution at the end.
Open communication and teamwork is where it's at ;)
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