And I’m not referring to theories about how it bends and doubles back, or may exist elsewhere in parallel versions. No, I mean ordinary, everyday time, which clocks and watches assure us passes regularly: tick-tock, click-clock. Is there anything more plausible than a second hand? And yet it takes only the smallest pleasure or pain to teach us time’s malleability. Some emotions speed it up, others slow it down; occasionally, it seems to go missing – until the eventual point when it really does go missing, never to return. I’m not very interested in my schooldays, and don’t feel any nostalgia for them. But school is where it all began, so I need to return briefly to a few incidents that have grown into anecdotes, to some approximate memories which time has deformed into certainty. If I can’t be sure of the actual events any more, I can at least be true to the impressions those facts left. That’s the best I can manage.There were three of us, and he now made the fourth. We hadn’t expected to add to our tight number: cliques and pairings had happened long before, and we were already beginning to imagine our escape from school into life.