Let me look at something:
Dolls
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Barbies Action figures
So here you are proving the point that Barbie and Action Figures are different. By making two different classifications for them.
Also, let's look at something else:
but humans and sharks are alike since we are both animals. But if you really wanna be split hairs, we have different characteristics, but still share others making us very broadly speaking the same!
And the same goes for beds and bench press tables (or whatever they're called)
So you could say the same thing for elephants and mice. They are both animals, so they surely must be the same?
But they can't be, I mean, how can a 200 ton elephant equal a 6-ounce mouse? They have similar qualities, yes, qualities that make them both animals. Make them both the same category. But you can't call an elephant a mouse or vice-versa, because that does not fit each other's characteristics.
Same for Barbie dolls and Action Figure dolls. They are both dolls, yes, but they have different characteristics that make them each unique.
Humans are uniquely different, each and every one of us. If we are all the same, does that mean Mom = Dad? Does that mean Grandpa = Grandchild?
I think this is getting more into what we categorize them than whether or not they are the same. So let's stick with categories and look at this analogy. You go to Wal-Mart, and head down the jewelry aisle and take a wristwatch. Then you go across the store and head to the Electronics Department and take a copy of Halo: Combat Evolved. You take them both to the register and pay for them simultaneously. Since you bought them in the same store, surely they must be the same thing? I mean, the same price, the same receipt, the same bag, the same entrance doors? They have all the same qualities and characteristics, you should be able to call the wristwatch your new copy of Halo and your game a watch.
That just doesn't work. That's why there are categories, sub-categories, and sub-categories within the sub-categories, and so on and so on. We categorize so that things that share the same characteristics are within the same category or sub-category, but also so that things that have opposing qualities are in different sub-categories. When you get to the bottom of it, you have to place Barbie on one part of the shelf and Commander Cobra on the other. Their differences is what causes this discrimination, and eventually you have to draw a line somewhere inside a category that differentiates between good and evil, Halo and time, doll and action figure.
