Today I'm spilling on why I'm obsessed with Elizabeth Holmes and Theranos.

A lot of it boils down to this: I was inspired by her at first, but once she fell from grace, I realized there was a lot to learn from her and similar "unicorn leaders" like Adam Neumann of WeWork.

I believe there is an important lesson to be learned about visionary leadership here:

Visionary leaders invite us into a picture of possibility—what the future could be if we work together to make it real. Visionary leadership is literally about something that doesn't yet exist. It's essential to any cause worth fighting for—a sense of what we're moving towards that is inspirational and motivating.

So where is the line between welcoming others into a vision for the future and outright fraud?

As we reflect on Dr. King's legacy today, I'm thinking about his role as a visionary leader.

It reminds me of a simple but powerful concept called Creative Tension, which was formed by Peter Senge, a professor of organizational learning at MIT's Sloan School of Management.