I can't say it any better than David Harsany has here.
For this to work, though, we now have to accept that the woman Barack Obama christened the most qualified presidential nominee in history can’t understand the most basic workings of an email account. Although she served as both a U.S. senator and as secretary of State of the most powerful nation ever, she’s incapable of following basic directions. And, despite extensive training in the proper handling of classified information, she probably couldn’t get clearance as a White House intern.
“One of the things I’ve learned in this case,” an unconvincing Comey ruminated during the hearing, “is that the secretary might not have been as sophisticated as people assume.” Then he took to the awkward task of convincing America that Clinton was Mrs. Magoo rather than a rock-ribbed veteran of decades of federal investigations.