Soon it is going to be the 10th anniversary of the 9/11 terrorist attacks, and the television stations seem to be gearing up for programmes that will take us back to that terrible event. I am working on an article for the print edition of the paper about the day of the attacks, and in the course of my researches, and partly out of curiosity, I reminded myself of what I thought at the time. The following paragraphs are what I wrote for the Daily Telegraph, and originally appeared on 10th November 2011, part of a long series of reflections on the events of 9/11.