In the first two pages of any book, Orson Scott Card says you need to answer three questions:
1. So What? Why should I care? Why shouldn't I go downstairs and watch TV? I've seen this kind of thing a thousand times before.
2. Oh Yeah? Come on. I don't believe anyone would do that. That's not how things work. That was pretty convenient, wasn’t it? Give me a break.
3. Huh? What's happening? This doesn't make any sense. How dumb does the author think I am?
He's right. I see these kind of problems in unpublished manuscripts a lot.