I do really want to emphasise that point on evidence-based policy, because, when we're talking about our approach to substances, whether they be cannabis or they be alcohol or they be tobacco, it is very much the case that the question has to be: if we acknowledge that a substance can cause harm, how do we best go about reducing that harm? And most researchers in the space of drug-harm reduction will say that there's a kind of spectrum of approaches that you can take. At one end, one extreme, you have criminal prohibition. At the other end of the extreme, you have, effectively, an unfettered legal free market. At both ends of that spectrum, you have, on the one side, criminal organisations and, on the other side, commercial entities who are attempting to exploit vulnerable communities in order to make a quick buck. In both of those instances and at both of those extremes, you have the maximisation of harm in order to drive a profit motive.