I agree with the last two comments, and not just because my name’s Mark. Assessing risk is surely about considering the combination of the seriousness of a possible consequence as well as the probability of it occurring, and this film ignores the latter aspect. Anyway, even those that still think it improbable that there is a human contribution to climate change have been known to act responsibly and campaign for policy change in this direction simply because of considerations of sustainability, ecological interdependence etc.