 From toys to medicine to navigation, one man's love of science made the world a much better place for all of us. With the Success Journal, I'm Chris Whitting. I'm Kareem Abdul-Jabbar. I learned about atrial fibrillation the hard way. My symptoms would come and go. Shortness of breath, fatigue. I kept going. Then I got so lightheaded, I couldn't. My doctor said I have AFib, so I'm about five times more likely to have a stroke.