Is my 'common sense' your 'common sense'?

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I was having a discussion with my husband a while ago about a friend of his who I think has NO COMMON SENSE at all. In almost everything. He told me, that what I see as 'common sense' others might not see as common sense. The definition of COMMON SENSE: -Sound judgment not based on specialized knowledge; native good judgment. -plain ordinary good judgment; sound practical sense ...so there is some intelligence behind having common sense. I've even heard that the more intelligence you have, the less common sense you have, which is a total opposite by definition. To me, common sense is this people should already know. "Look both ways before crossing the street" "Don't take candy from strangers" "Don't take things from the store without paying for it" Sure most of these are taught to us, but like the definition, it's based on specialized knowledge. So do you think you should hold other people to your own belief of common sense, or do we just let everyone else think their own way?