Mother Nature doesn’t give her information for free. Her minions cloud their enemies’ judgement with devilish deception, and make plain the truth for their friends. Birds flock and fish school, predators are confused, and the little guy is a little safer. Delightful collaborations emerge where we least expect them, but it’s a simple matter of finding our mutual interest. Transparency and trust are much harder to come by. Welcome to the sharing economy, where online platforms help people share access to goods and services. Maybe it’s cars, or rooms, or power tools. Ride-sharing companies Lyft, and room-sharing app Airbnb, even Craigslist. The sharing economy offers tremendous opportunities, but you have to elicit trust to get it. And that means giving a measure of transparency into who you are. You have to allow yourself to be vulnerable, be willing to reveal something of yourself to strangers. If we can take that plunge, we can learn to “surf for free” on an unprecedented scale, just like the rest of nature. Keep reading to learn how common crows work together to keep their entire flock in check.