premise: Duff McKagan was born in 1994.
hypothesis: Michael Andrew `` Duff '' McKagan ( born February 5 , 1964 ) is an American musician , singer , songwriter and author . He is best known for his twelve-year tenure as the bass guitarist of the hard rock band Guns N ' Roses , with whom he achieved worldwide success in the late 1980s and early 1990s . Towards the end of his first tenure with Guns N ' Roses , McKagan released a solo album , Believe in Me ( 1993 ) , and formed the short-lived supergroup Neurotic Outsiders .