"Two Ways to Think About Nothing," Robert Krulwich
Today it sits a total blank. You can stare at it forever and not know what it had been (or perhaps, in some ghostly way, still is) because the painting isn't telling and de Kooning and Rauschenberg are both dead, so they can't tell. You wouldn't even know there'd once been something to look at, except for the title. It's called "Erased de Kooning Drawing." Same for the patch of space. The universe doesn't tell what it's hiding, though it's hiding a lot.