any time you mention it, the hordes descend, bearing complicated stories about the medieval ice age, or sunspots, or water vapour, and, you know, there is a lot of myths about climate change borne by these climate sceptics but to debunk those myths you have to know, you know, you have to go online, and research, and read, and be able to respond to them in detail, and a lot of people just find that prospect dreary, and so they don't bother.