Hi everyone, welcome to PAS’s biweekly 300-word commentary series. This is a platform for short, informal commentaries by members about what they’re working on, what they’ve thinking about, or even a place to ask questions they don’t have answers to. The goal is to spur conversation, help us get to know each other, publicise our area of work, cross-fertilise ideas and get feedback. So please participate actively using the comment function! Neither the commentaries nor comments will be edited, but please don’t say anything that will get PAS in trouble!