What is normally called common sense is not common sense. Common sense is the sense that is actually common. Idealized common sense (which, I shall elaborate, is the union of the set of thoughts you would have to be carefully trying to be common-sensical in order make salient in your mind and the set of natural common sense thoughts) should be called something other than common sense, because making a wide-sweeping mental search about possible ways of being common-sensical is not common, even if a general deference and post-hoc accountability to the concept of common sense may be common.
What is normally called common sense is not common sense. Common sense is the sense that is actually common. Idealized common sense (which, I shall elaborate, is the union of the set of thoughts you would have to be carefully trying to be common-sensical in order make salient in your mind and the set of natural common sense thoughts) should be called something other than common sense, because making a wide-sweeping mental search about possible ways of being common-sensical is not common, even if a general deference and post-hoc accountability to the concept of common sense may be common.