Ken Crossland has a good explainer piece on the Hillary Clinton email issue that conservatives have used to bludgeon her campaign for months.
Hillary Clinton isn't a technophile. She viewed her set-up as a means to an end. Was it working? Great. Did she care how it worked? No. It's likely as simple as that.
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I'm pretty convinced, viewing the evidence, that Hillary Clinton believes she's in the right with her email server, that it helped her do her job well, and that it kept America safe. What irks the public is that we know that she knows that we know that Clinton doesn't actually care that she used a private server, and the only thing she laments is that it blew up in her face.