By Bards & Company,

You have heard that leaders of good quality would do best to not surround themselves with “yes men.” This is true for several different reasons, including:

1) It allows for diversity of thought, allowing leaders to reach a new dimension of possibilities they never thought possible.

https://medium.com/swlh/having-enemies-in-your-inner-circle-can-be-a-good-thing-thinkin-like-lincoln-acedc6dae089