I think this is unfair. The questions may seem stupid to those that have experience, but to me they are just the questions of a total beginner. Granted, maybe some people would google a bit more before asking this sort of questions, but there's really no harm done by asking them.
I have answered other questions from the OP on more than one occasion in as much detail as my experience allows. Many others have done so as well.
Too find ones advice repeatedly ignored, as is the same and different advice from other posters, by dint of the same questions being asked again and again is frustrating. The OP is either a troll, incapable of understanding the points made to him or simply rude. I'm being far from unfair.
Q: Why does a screw come undone?
A: It wasn't tight enough initially.
It's so blindingly obvious it is clear to me this poster is WUM. Why it's allowed is beyond me.