He had a hard time lying because his nose got longer every time he did.

Gas-powered leaf blowers would disappear if the smoke they belched out was black instead of invisible.

And few people would start smoking if the deposits on their lungs ended up on their face instead.

We’re not very good at paying attention to invisible or gradual outputs.

The trick is simple: If it’s important, make it visible. If it happens over time, create a signal that brings the future into the present.

Creating vivid measurements of essential variables that others overlook is a significant competitive advantage.