This Entrepreneur Turned His 'Emotional Rock Bottom' Into an Empathy Movement, Fueled by a Thought-Provoking Card Game That Sold Out in 5 Days Michael Tennant is the founder of Curiosity Lab, the idealistic marketing group that generated more than $400,000 in revenue in six months and has grown 500% year over year.

In celebration of Black History Month, we are spotlighting great entrepreneurs from the past and present.

"What is something you pretend to know about, and why?"

The question appears on a light blue card decorated with four gender-neutral faces, their eyes shut. As you move through the deck, the card colors change — to green to yellow to pink — and the eyes gradually open. The designs reflect the nature of the questions; those printed on blue cards are the least probing, perhaps the most approachable, while those on pink pose deeper, more controversial queries: "Can violence ever be justified? In what circumstances?"