Nir Eyal

The cold truth is that the best products don't always win. Many times it's - the products that have the ability to keep users coming back and using them without conscious thought and using them out of habit are the ones that keep us coming back.

The market for religious apps is fiercely competitive; searching for 'bible' in the Apple App Store returns 5,185 results. But among all the choices, YouVersion's Bible, funded by LifeChurch.tv of Edmond, Oklahoma, seems to be the chosen one, ranking at the top of the list and boasting more than 641,000 reviews.

Having a Congress with a more diverse educational and professional background would serve the country well. And given the budget challenges facing America today, we might benefit from a few more cold, calculating problem solvers, and fewer courtroom impresarios.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.