Powdork - 2:57 pm on Dec 29, 2004 (gmt 0)
The capacity problem takes that into account. The pagerank calculation matrix can handle 4 billion urls. That is the real index. Another index of 4 billion urls is there for backfill. Those in the index just not the right one for ranking against others that are in the right index. That is the simplified version of the theory.
My sandboxed pages show up fine in Google if you search for something super specific that exists on no other page.