[w1ntermute]

Then have the law reverse if the side effects and dangerous behavior go up.

My general point is that, when there's uncertainty as to the outcome of a change in the law, you could just have a clause in the bill saying it'll be reversed automatically if things go south. This could be applied to anything from drug laws to gun control to lower/higher taxes. Rather than sitting around guessing what might happen, just run an experiment, and reverse it quickly if things don't go well.