Intangibles have a funny way of being really important in sports. In recent years Brian Scalabrine and Kendrick Perkins were lauded as intangible guys. Guys that bring stuff to a team that doesn't show up in the boxscore. The saved loose ball to keep a possession. The really good pick to free up a shooter for an open shot.
When Perkins was traded to the Thunder back in 2011, his supporters compared it to taking away the Celtics' soul. But if you really wanted to know what it's like to have the soul of the Boston Celtics' taken away it was when this week's player, Paul Silas, was traded away.