The Left-Handed Mystery

          
            This article was by Rik Smits and titled "The Mystery of Left-handedness. The author delves into the mystery of left-handedness and possible explanations. Although lefties might have a harder time learning how to write, there is no real evolution advantages or disadvantages. I  believe that being left-handed simply means you prefer to use your left hand; not that you are going to die young, get cancer, 'criminal mindsets', or any other personality ailments. I have never met someone and said, "they must be a leftie". You Can't tell unless you've watched them write. Only about one in ten people are left-handed. I learned that we are the only species where the limb-preference is far from 50/50 split. The article also explains that there isn't a genetic explanation for left-handedness, and it's occurrence frequency will probably remain constant because its lack of advantages or disadvantages. I don't think being a leftie is a "trauma" or "disability" I think its simply a preference. Using your left hand isn't going to stop you from being less successful than someone else that is right-handed.
            This articles main purpose was to inform the reader about the "mystery" of left-handedness. (Smits). The author strategically writes a common suspicion about lefties and the statistics behind why people think its true. He then refutes it with the little evidence that is actually valid. It shows the reader that there really isn't a way to tell when and why left-handedness appeared in the human species, just that it did and there are not advantages or disadvantages to change the condition otherwise. He then equates hand preference with another human trait, sexuality. Homosexuality is just about as common as left-handedness. Because it makes only a small evolutionary impact, the frequencies remain unchanged in the human population. This example and comparison helps the reader understand that a lot is still a "mystery" about traits like left-handedness, but we do know that scientifically hand you prefer to write with will don't determine your personality or future success.

http://www.salon.com/2011/10/29/the_mystery_of_left_handedness/singleton/