They argued that separate people should look at a problem so as not to make the same mistake twice: > The developer that wrote the code by definition cannot wr

They argued that separate people should look at a problem so as not to make the same mistake twice: > The developer that wrote the code by definition cannot write an appropriate test suite for it You said that issue could be applicable to everyone: > The same is true of pretty much everybody - PMs and QA included. Everybody misses details and edge cases. I pointed out that the issue can't be true of everybody, since everyone other than the original developer would generally avoid it. You then said I repeated what you said. Which is it?