My printer screwed up and smeared a 1/2 inch line in the middle of it because I forgot to open the door where the paper comes out. I keep balancing the cost to reprint it versus the likelihood that I'll ever take a close look at the back cover again. Then I consider that the very knowledge of this flaw drives me nuts. Then I also consider that I let a printer error on one of my shorts DVDs go unfixed for months.
I guess only the future will show us what can happen.