The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses

by Eric Ries

We could survey them to get their opinion, but that would not be very accurate because most people have a hard time assessing their feelings objectively. Experiments provide a more accurate gauge.

Remember, planning is a tool that only works in the presence of a long and stable operating history.

When in doubt, simplify.

We all need a disciplined, systematic approach to figuring out if we’re making progress and discovering if we’re actually achieving validated learning.

Actionable metrics are the antidote to this problem. When cause and effect is clearly understood, people are better able to learn from their actions. Human beings are innately talented learners when given a clear and objective assessment.