Dalrymple has an update to his Global Warning column wherein he visits the supermarket:
…I looked down at my own purchases: a pot of organic yogurt and the Guardian newspaper. What diagnosis would the person behind me make, if he were diagnostically inclined? Would he not jump rapidly to conclusions about my way of life and my opinions, especially as I was wearing corduroy trousers, conclusions that would nevertheless have been erroneous?
He might have been saved from error by observing the book I had with me…