.@calestous it will be the toughest ethical debate in human history, & needs to be ongoing. but it will happen after the fact. #unstoppable
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@calestous Imagine people free of inheritable disease, lifespans tripled.I imagine ppl were afraid of electricity at one time.Thanks. Twitter will use this to make your timeline better. UndoUndo
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