The issue is how. It's the old 80/20 rule, although perhaps in this case it is more like the 93/07 rule. We've got the "easy" ones, but we infer there are othe

The issue is how. It's the old 80/20 rule, although perhaps in this case it is more like the 93/07 rule. We've got the "easy" ones, but we infer there are others we haven't detected. How do we detect them? Space is really really big.