Bottom 10 Percent progressives are not enthusiastic about concentrations of wealth. But that's not what keeps them up at night. Their focus is on deprivation and lack of opportunity. They're motivated by empathy for people who are suffering, rather than outrage over unjustified wealth.

One lesson is that if you want to predict voter turnout, you should ask whether at least one candidate is attracting high levels of enthusiasm - not whether the stakes are high, or even perceived to be high. That fits the historical pattern.

The U.S. is supposed to be a nation of second chances, but for the 70 million Americans with a criminal record, we're not doing such a great job. Even among those whose crimes were nonviolent and committed long ago, too many still bear a scarlet letter.

For business, government, and education, the lesson is clear: People ought to be relying far more on objective information and far less on interviews. They might even want to think about scaling back or cancelling interviews altogether. They'll save a lot of time - and make better decisions.

In the end, 'Star Wars' insists that you can't be redeemed without attachment. That's the strongest message of the saga, and that's what makes it speak to people's deepest selves.