it's not rocket science

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be not rocket science

To not be a pursuit, activity, or endeavor that requires extraordinary skill or intelligence. Look, all you need to do is reformat the hard drive on your computer. It isn't rocket science! Sure, it took a little bit of time to figure out, but reinstalling the modem wasn't rocket science or anything.
See also: not, rocket, science
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

it’s not ˈrocket science

used in order to emphasize that something is not complicated or difficult to do or understand: Oh, I’m sure I’ll manage. It’s not exactly rocket science, is it?
See also: not, rocket, science
Farlex Partner Idioms Dictionary © Farlex 2017
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It's not rocket science. If you can't do the job, then please don't bother!
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