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Science fiction loves the merger of the human body and machine. In mid-March 2013, what's the status of the merger? - 

Science fiction loves the merger of the human body and machine. In mid-March 2013, what's the status of the merger?

Will Oremus, a writer for Slate who has been working on a series about using tech to build better people, joins Marketplace Tech host David Brancaccio to explain how far we've come and where we are headed.