Roger Simon has a pithy analysis of Hillary Clinton's thought process:

You can almost see the wheels grinding when asked a question:

What did I think in the days of Saul Alinsky? What did I think back in Little Rock? What did I think when Bill was president, first term, second term? Should I bake cookies? Why did Monica keep that dress? How could I have left those billing records in the White house? Is this good in Ohio? What did I think when senator? When do the Watergate hearings start? What did I think when secretary of State? Is this a war zone? Am I under fire? What did Sergei Lavrov do with that reset button? Will Lanny Davis back me up on Fox? Why does Putin always show off his pecs? Is my old friend Suha still at the Bristol? I should ask Huma. What did Obama say? Should I be separating from him on this one or not?

TILT!

Yes, like a pinball player, you can only handle so much. With all those different personas, opinions and rationalizations racing around in the brain, the machine overloads. And in Hillary's case that machine is long overfilled, like one of those computer hard drives we've all junked.