Welcome arguments and debates
Level 5 leaders encourage dialogue and debates before taking any decision. To create the right environment for the dialogue they establish ongoing series of general manager meetings. These meetings appear almost chaotic. Managers yell, pound on the table, engage in verbal duels, almost engage in fist fights, but after spending hours in hot debates they also arrive at conclusions.
For example, Ken Iverson promoted this culture at Nucor, where senior executives used to debate and even yell and scream, before arriving at a solution. They used to debate on various issues such as whether to sell Nucor's nuclear business, focus on steel joists and manufacture own steel, invest in their own mini-mill, build a second mini-mill.
Learn from mistakes
Level 5 leaders say something like this: I will take responsibility for this bad decision. But we will take responsibility for extracting the maximum learning from the tuition we've paid. For example, in 1978 Phillip Morris acquired Seven-Up Company. But after 8 yrs it was sold at a loss. Though the loss was negligible compared to Phillip Morris' total assets, but the management discussed it openly and tried to learn from their mistake. But no one blamed each other for the decision to sell Seven-Up Company. It was only the company's CEO Joe Cullman who squarely blamed himself for the mistake, mainly for not paying enough attention to people who were opposing the buyout in 1978. But he along with senior managers spent hundreds of hours learning from this mistake.