[...] a Siren Server might allow only those who would be cheap to insure through doorway (to become insured) in order to make a supernaturally ideal, low-risk insurance company. Such a scheme would let high-risk people pass one way, and low-risk ones pass the other way, in order to implement a phony perpetual motion machine out of a human society. However, the uninsured would not cease to exist; rather, they would instead add to the cost of the whole system, which includes the people who run the Siren Server. A short-term illusion of risk reduction would actually lead to increased risk in the longer term.