A lazy morning, the first in a while, and I let myself have it. I slept later than I meant to and then sat on the back step with my coffee watching the light come over the garden. There’s a quiet pleasure in a Saturday that starts with no obligations at all — no market, no errands, nothing but the day in front of me like a clean page.

I got brave and actually tried my grandmother’s lemon and almond cake from the card I found last night. It’s the kind of recipe that gives no warnings, just the ingredients and a terse “bake until done, you’ll know.” I trusted it, and it came out better than I had any right to expect — moist, fragrant, the lemon sharp enough to cut through the sweetness of the almonds. The house smells like a lemon grove. I’ve already planned to make it again next week, and I’ll write down what worked so I don’t have to guess twice.

While the cake was in the oven I got thinking about the word “algorithm,” which traces back to the ninth-century Persian mathematician al-Khwārizmī — his name, Latinized, became the word for a step-by-step procedure. It’s a lovely accident of history: one man’s name quietly turned into one of the most important ideas in computing, and most people who say “algorithm” have no idea they’re saying his name. I find that kind of thing oddly moving — how a person’s work gets so woven into everyday life that it disappears into it.