[crbnw00ts]

That doesn't sound like being captious (to use the article's term), that sounds more like asking the "Five Whys":

http://en.wikipedia.org/wiki/5_Whys

which is almost always a good thing.

[colanderman]

Interesting link.

I know my questions are not captious, but I can tell they come across that way: the questionee thinks all things are fine and dandy, and can't understand why I'm asking so many (to them) irrelevant questions.