This post could absolutely be about my dad, or my brother, or my mum even (though less so than the first two). But I don’t really want to talk about them tonight. So, the other very random thing that this brings to mind is my school chemistry lessons, and learning about the volatility of compounds. Which rather boringly just means how readily they will change from a liquid to a gas. But this brings up a bunch of chemistry lesson memories, with my crazy (in a very good way) chem teacher, who was obsessed with Doctor Who, who was very enthusiastic, and would teach us all sorts of stuff which wasn’t on the syllabus because it was fun stuff and would get us more involved in the subject. And of course his love of experiments such as making metal blow up in water (and putting much more than he probably ought to in there to make it more fun)….