it's not rocket science
also it doesn't take a rocket scientist humorousused to say that you do not think that something is very difficult to do or to understand:
Come on, it's only a crossword, it's not rocket science.
Drugs equals crime. It doesn't take a rocket scientist to figure that one out.
See also
brain surgery
Thesaurus: synonyms and related words
Easiness and simplicity
- (as) easy as pie/ABC/anything/falling off a log idiom
- at the push of a button idiom
- at the stroke of a pen idiom
- be (all) downhill idiom
- be child's play idiom
- breeze
- convincing
- foolproof
- friendly
- gift
- gimme
- give/hand sth to sb on a (silver) platter idiom
- rocket science
- sail
- sb could do sth with one arm/hand tied behind his/her back idiom
- self-explanatory
- semi-skilled
- simple
- simplicity
- sweat
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