[The once and future king]

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Re: Question two. A study done at Harvard found that the use of cell phones while driving increases productivity by 42 billion dollars a year; however, using cell phones while driving also results in the loss of 42 billion dollars a year as the result of death, injury, and property damage. Therefore, using cell phones while driving should not be a concern since it's not "worth it" to change the behavior.

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Surely this a great arguement for legislating for hands free sets to be compulsory in cars. You get all the benefits and non of the downs.