This describes pretty concisely how governments might choose to use or not use evidence about drug harm and the reasons for doing so:
Drugs instantiate the classic problem for evidence based social policy. It may well be that prohibition, and the inevitable distribution of drugs by criminals, gives worse results for all the outcomes we think are important, like harm to the user, harm to our communities through crime, and so on. But equally, it may well be that we will tolerate these worse outcomes, because we decide it is somehow more important that we publicly declare ourselves, as a culture, to be disapproving of drug use, and enshrine that principle in law. It’s okay to do that. You can have policies that go against your stated outcomes, for moral or political reasons: but that doesn’t mean you can hide the evidence, it simply means you must be clear that you don’t care about it.
http://www.badscience.net/2009/06/this-is-my-column-this-is-...
This describes pretty concisely how governments might choose to use or not use evidence about drug harm and the reasons for doing so:
Drugs instantiate the classic problem for evidence based social policy. It may well be that prohibition, and the inevitable distribution of drugs by criminals, gives worse results for all the outcomes we think are important, like harm to the user, harm to our communities through crime, and so on. But equally, it may well be that we will tolerate these worse outcomes, because we decide it is somehow more important that we publicly declare ourselves, as a culture, to be disapproving of drug use, and enshrine that principle in law. It’s okay to do that. You can have policies that go against your stated outcomes, for moral or political reasons: but that doesn’t mean you can hide the evidence, it simply means you must be clear that you don’t care about it.