It’s seven minutes after 10 p.m., and the usual ruckus ensues.My husband, Peter, is wearing earplugs. He is in the habit of doing this when we’re staying in San Miguel de Allende, Mexico, because our little apartment is right in the center of town and, like all the homes in San Miguel, there is no air conditioning because it is cool this high in the mountains.But the last few weeks have been warm, and it’s nice to have fresh air. So we open the sliding door to our little balcony, and we hear everything that happens on our street.The occasional ...