rocket scientist, you don't have to be a

you don't have to be a rocket scientist (to do something)

You don't have to be particularly intelligent to be able to do or understand something. You don't have to be a rocket scientist to learn how to change the oil in your car. You don't have to be a rocket scientist to know that you have to unplug electrical equipment before you try to fix it.
See also: have, rocket, scientist, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

you don’t have to be a ˈrocket scientist (to do something)

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it doesn’t take a ˈrocket scientist (to do something)

used to emphasize that something is easy to understand: Of course this model sells more than the others — it’s the cheapest! It doesn’t take a rocket scientist to work that one out.
See also: have, rocket, scientist, to
Farlex Partner Idioms Dictionary © Farlex 2017

rocket scientist, you don't have to be a

This problem or idea is not that difficult to understand. This hyperbolic colloquialism dates from the mid-twentieth century, as does its synonym, you don’t have to be a brain surgeon. Clearly they imply that these professions require unusual intellectual acumen. Reporting on an economic forum, the Boston Globe quoted former President Bill Clinton, “You want to save 4 million lives? Give them the medicine. It’s not rocket science” (Jan. 28, 2005). Also, “And then he got murdered. Doesn’t take a rocket scientist to figure there’s a lot more to it than I thought” (David Baldacci, Hour Gam, 2004). See also no-brainer.
See also: have, rocket, to
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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