“What you really want is to be is a good predictor of the future.”

“The only way to win is to learn faster than everyone else,” said Eric Ries, author of The Lean Start-Up. And yet, most people — regardless how brilliant or talented they are — don’t extract as much learning out of their experience as they could.

If you were mining for gold, you wouldn’t just extract 5% of the gold and leave the rest behind, would you? So why do people do the equivalent when it comes to learning from their experience?

A few reasons: