>If you deleiver it as critique than most people will not be happy and most likely will reject it but if you deliver it as suggestion than most people will accept it.
What if you deliver it as a whole written solution? I probably had to just convey the idea, but I thought it would be much easier to code the idea completely. And it turned out, that my colleague even didn't look at it...
If it's not broken, fix it until it is.
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