What if there is an error or bottleneck which really counts? To say "it sucks" is rude and a very wrong way to tell but sometimes a fresh eye founds real things

What if there is an error or bottleneck which really counts? To say "it sucks" is rude and a very wrong way to tell but sometimes a fresh eye founds real things in code and it's a bad policy not to tell. Most of the people take it as piss off for sure but still...