The one who browses through a book compared to the author

رابط المقال

The one who browses through a book is more noticing of where the flaws are therein than the one who compiled it in the first place.

[Quoted in Al-Rudud, Bakr Abu Zayd (p. 127)]

المتصفح للكتاب أبصر بمواقع الخلل فيه من منشئه