It might have been the year the 49ers went 18-1 and won the Super Bowl over the "invincible" Miami Dolphins. Bill Walsh was trying to explain what was making the 49ers GREAT. Bill Walsh was trying to "nail down" a definition of GREATNESS. He said that no one wins every time. But if you do not play your very best game against 'these' 49ers, you WILL lose! This is the kind of 'knowingness' with which these 2012 San Francisco 49ers approach football. They know, win or lose, they are thrilled with... Sign in to see full entry.