It’s time for the Miami Heat to prove all the doubters wrong. As the playoffs begin, all the talking heads — from Charles Barkley to Skip Bayliss — are claiming that team President Pat Riley is going to dismantle the Big Three if the Heat doesn’t win the championship this year. If that’s the case, Pat Riley will be admitting to a failed experiment. It would also be a cop-out because it won’t be the fault of Lebron James, Dwayne Wade and Chris Bosh if the team falls short of its goal.