Selecting people who fit your culture is important, but if you’re all too much in lock step, you open yourself up to blind spots and the perils of groupthink.

• Too many differences, and you’re susceptible to conflict, mistrust, and miscommunication.

• Too many similarities can discourage creativity, innovation, and individual responsibility.

• “Fit” is more about people sharing the same broad values rather than thinking exactly the same way. Planned diversity is healthy.