Recently, during a very relaxing holiday in Cyprus, I had a revelation of sorts: my brain was rotting. I know this because I read a lot of books on holiday. It’s the only time I do read books! Well, I did read a lot on holiday, but the last couple of years I really struggled to focus. I used to put it down to “I’m just super tired, man, I don’t have the mental strength to concentrate” but that was probably only a part of it. I struggle to concentrate all the time — brains, innit — but it looks...