Part way into writing Heretics of Piedmont I found myself typing the phrase: “after a few minutes.” I paused, shut my eyes, and doubts entered my mind. That wasn’t the first time I had used a phrase like that, but it felt like I should check into it. Heretics of Piedmont is set in the 15th century—1458 to be precise. Did people even think in minutes and seconds then? Did numerical time-of-day exist in the common person’s mind?