` :::: Well, the difference is between not noticing that there are dashes with different length and thinking that the dashes of different length mean the same thing. If you showed me a picture of a bunch of penguins I might think that they're all the same kind of penguin, and if you told me, ``Some of these are Emperor penguins and some are puffins`` or whatever, I'd say, ``Oh, I didn't know that.`` I never really would have formed an opinion as to how many kinds of penguin there were in the picture. If you asked me, I might even get it wrong, but I'm not actively harboring a misconception because I haven't really formed a conception in the first place. If instead you told me I could tell a male penguin from a female penguin because all female penguins have green feet, I'd think I knew how to tell a male from a female, but I'd be wrong.   `