Without Tom Lehrer to poke holes in the New Math, I'll take a stab at it.Lately online, I've seen a rash of speculation that Time Warner Cable will buy the Dodgers, based on the following algebra: Why would Time Warner Cable pay up to $4 billion for 20 years of Dodger cable television rights when it only needs to spend an estimated $1 billion or so to buy the team (and in turn control of the TV rights) and be home free?Well, I'm here to tell you why.