i never saw professor longhair life. -- what was i missing all my life? tavis: what is the point of this documentary? so much has been said, done, written about new orleans. what is the point of this particular documentary? >> a hurricane did hurricane damage to the gulf coast but what almost killed new orleans was not a hurricane. when it passed by new orleans, this was on a category one or a weak category two, it was a catastrophic failure of the hurricane system. it took them four and a half decades to almost complete the project and it failed in more than 50 places under storm surge conditions that were less severe than was supposed to withstand. it was a catastrophic situation. people talk about the government and all of that. unless you have read these reports by the investigations, you don't know why those people suffered, why those people drowned. >> i heard you say that it took four and a half decades to almost complete. >> it was not completed. >> i have heard of government bureaucracy, how does any entity work on a project for four and a half d