When does summer end and autumn begin? I lit a candle today, so it feels like autumn has arrived, even though I was basking in the summer sun in Spain only two weeks ago. This weekend, it’s supposed to be getting hot again. Although I love the sun, I also want to know what weather to expect when I wake up. Have you started wearing socks again? Why do we like to have clear distinctions between times and seasons?

Now that autumn has plausibly arrived, the deadline for my book manuscript is looming. I had planned on …