Rational NBA fans don't think they can physically compete with the game's players. They also realize drawing up plays during timeouts, juggling lineups and taking on every other responsibility a professional head coach has would pretty much be impossible.
But talk to any knowledgeable fan about the game, and basically all of them think they could do a better job than their favorite team's general manager. They probably aren't right. (But in years past, the most adept basketball aficionados may have had reasonable claims to take over in Toronto, Minnesota, Charlotte, Washington D.C., Brooklyn or Manhattan.)
In reality, the general manager has the most responsibility and the most diversified objectives. They have to master the league's expansive collective bargaining agreement, keep their teams competitive in the short and long term and spend millions of their boss' dollars with confidence and wit.
Despite the belief of most, building a successful team is actually an extremely difficult task. Here are the NBA's five best general managers working today.