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

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
Farlex Dictionary of Idioms.

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

,

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
Farlex Partner Idioms Dictionary
See also:
  • Don’t make a federal case out of it!
  • don't bet on it
  • don't get me wrong
  • don't beat a dead horse
  • all in (one's) head
  • don't cry before you are hurt
  • a thing you don't want is dear at any price
  • come it
  • come it (with one)