No matter what you've been told in the past, size does matter, folks. If you've been paying attention to the league, you've noticed how many teams have added more centers and power forwards to their rosters. The Spurs are one of those franchises, and it's a good thing they did, because this is the year that they get back to the playoffs, and Luke Kornet is going to be imperative to making that happen.
Not every team has adopted this philosophy yet, but enough of them have. Three of San Antonio's biggest rivals have. The Rockets, Thunder, and especially those crazy Mavericks are going to try to swallow their opponents whole.