I quoted Michael Jordan in my implementation book and the publisher came back and said we needed to say who Michael Jordan was if we were going to quote him. My dad said at the time “If you quoted Jesus Christ would they also want you to say who he was?”. 

I think that’s a nice illustration of how famous Michael Jordan is. I actually spent a year in Illinois in 94 -95 when Jordan and his Chicago Bulls were at the height of their power. (They won three championships in a row, missed one when Jordan turned his hand to baseball for a year, then won another three in a row when he came back.) It’s fair to say that his ability matched his fame.