The big question of our time is not Can it be built? but Should it be built? This places us in an unusual historical moment: our future prosperity depends on the quality of our collective imaginations.

The Lean Startup has evolved into a movement that is having a significant impact on how companies are built, funded and scaled.

A pivot is a change in strategy without a change in vision.

Zero invites imagination, but small numbers invite questions about whether large numbers will ever materialize.

Most start-up companies fail and it is smart public policy to help entrepreneurs increase their odds of succeeding. But, the biggest loss to our economy is not all the start-ups that didn't make it: It's the ones that might have been created but weren't.

Vanity metrics are the numbers you want to publish on TechCrunch to make your competitors feel bad.

The grim reality is that most start-ups fail. Most new products are not successful. Yet the story of perseverance, creative genius, and hard work persists.