The website cracked.com is becoming a favorite of mine. Of course, a lot of the humor is childish -- it's Cracked, duh -- but there is a core of wisdom and truth to their posts that attracts me.
Today they posted 5 Ways 'Common Sense' Lies To You Everyday which is actually a pretty good introduction to this particular flavor of uncritical thinking. It uses humor and a good grasp of current stuff that's hip (and some fairly NSFW things too, just so's you know) to show you just why what you're thinking is probably wrong, or at least under the influence of forces you may not be aware of. And, they use asteroid impacts as an example. Score!
As many people have said, common sense is neither. This article may actually help.
Tip o' the blinders to JokerMage.