As the pair of us set off, I was a little anxious. It felt like taking him for an MMR jab in the sense that, long-term, I knew he would only benefit from the experience, but that in the short-term I may end up having to distract and placate him with quite a bit of emergency Peppa Pig, boxes of raisins, packs of stickers, hard cash, bawdy, improvised songs about bums and impossible promises of rides in X-Wing Starfighters from Star Wars. We walked to the bus, father and son. He seemed cheerful. Oblivious.