Example: Incentives can tempt good people to push the boundaries farther than they’d ever imagine.

You often need incentives though to focus people in the right directionn.

Example 2: Tribal instincts reduce the ability to challenge bad ideas because no one wants to get kicked out of the tribe.

It's important to form a tribe, and to maintain its cohesiveness, otherwise you can't really get anything done.

And so on. It's good to consider both sides of each coin.