Kyrie Irving went on a podcast and questioned a lot of things. Things that are demonstrably fact. He questioned things like dinosaurs, and the aforementioned flat earth.
https://www.cnet.com/news/nba-star-kyrie-irving-believes-earth-is-flat/
Then, he doubled down and said he liked to question things and was amused to see the reaction.
http://www.si.com/extra-mustard/2017/02/18/kyrie-irving-reaction-world-flat-comment-hilarious
This is dumbassery at its finest. And this. This is what is wrong with society. The. Earth. Is. Not. Flat.