Subsequently, as part of brainstorming, critiques of the drug policy prescriptions described above should be presented. First, unreasonably harsh drug policies alone have not produced lower crime rates. (It should also be noted that crime rates nationally have declined irrespective of any state's three-strike laws. There are other factors, too, including the design of enforcement programs themselves, that affect demand.) Second, the social costs of legalization could be higher than at present: It would be harder to stop the spate of available drugs after the country has been flooded with legal drugs than to continue the existing policy. The Swiss failed earlier with their famous "needle park" experiment, which turned Zurich into the drug magnet for Europe. Third, even with the generally positive evaluation of treatment programs, the return to drug use is common. In most programs, better outcomes are associated with such factors as intact marriages, jobs short histories of drug use, low levels of psychiatric problems, and little or no criminality (Mieczkowski et al.1992,347). Both sets of propositions should be developed and critiqued, then synthesized into a concise set of policy recommendations based on a revised definition of the problem.