in novels ? Many writer at least go through their own book at least 10 times or more but still contains huge number of plot holes. Why is it so? Not just writer, every book before release in market is read by agent, editors, publishers, friends etc etc. Even after going through with such microscopic attention, book still contain so many plot holes. It doesn't make sense to me. I recently re-read Deathly hallows (6th time) and i can't believe that even after reading DH so many times, i notice more and more plot holes . DH is just a example, nearly every book i have read have lots of plot holes. Why is it so?