In reality, though, bad things often happen to good buildings, especially when they occupy that vulnerable stage when they’re too old to be new and too new to be old. The Thompson Center, now 32, is caught in this trap, its plight accentuated by the failure of financially ailing Illinois to clean or maintain it. The film shows us the results: Along the street, rusted-out metal columns; inside, ripped-up carpet that’s been taped together. But those problems can be laid at the foot of the state, not the architect.