premise: Dan Brown died June 22, 1964.
hypothesis: Daniel Gerhard `` Dan '' Brown ( born June 22 , 1964 ) is an American author of thriller fiction who wrote the 2003 bestselling novel The Da Vinci Code . Three of them , Angels & Demons ( 2000 ) , The Da Vinci Code ( 2003 ) , and Inferno ( 2013 ) , have been adapted into films . Daniel Scott Zahller `` Dan '' Brown ( born May 15 , 1990 ) is an American vlogger and discussion host , under the YouTube alias Pogobat .