My mom and I were trying to figure out what common sense was. By that I mean, we were talking about what we confided common sense and trying to figure out how it is learned. Some of the stuff I find to be common sense, she doesn't and vice versa. Maybe not the best example, but one thing we were talking about is shoving a knife in an outlet. If you've never tried it or never heard anybody tell you not to, would it still be common sense to you? What do you think common sense is defined as and how do people acquire it?