Swings and Roundabouts

I sit at my desk making a list, mid-drawing, whilst staring at the screen with a specifiers book in my lap which I glance down at now and again. It's a nice day so the window at the back is open and I can hear what sounds like builders drilling into masonry. I notice the time and head off to a doctors appointment. I'm in the waiting room for about half an hour and, as it's a nice day, the window is open. I can hear workers out the back and their intermittent drilling. Eventually I am called by the doctor. We have a chat and then she stares at the screen a lot, making a list and occasionally staring down at her drugs manual.