Frederick Irwin Dretske ( December 9 , 1932 -- July 24 , 2013 ) was an American philosopher noted for his contributions to epistemology and the philosophy of mind .
Frederick Irwin Dretske ( December 9 , 1932 in Waukegan , Illinois -- July 24 , 2013 ) was an American philosopher . He was known for his works to epistemology and the philosophy of mind .