I remember once sitting in a small grey room, my son playing with Lego in the corner, my ex-wife, Mandy, sat beside me, being told by a child psychologist that we did not notice Ewen had ADHD. The reason we couldn’t see his ‘condition’ was due to us having adjusted our perception of normal behaviour. The psychologist carried on that such behaviour - “inappropriate behaviour” - was often genetic, and so this could lead to it being seen as normal within the home: talking, standing, climbing and… something else, but by then I’d drifted off, and was looking at the Lego and imagining what I’d make if I could sit in the corner.