In Which the Author Takes a Play Day

The grandchildren have arrived and today is a zoo day. It’s always a good way to let the tykes run off energy without exhausting the grandparents. I’m not crazy about zoos – it bothers me to see animals in cages, even if those cages are the modern “natural habitats.” But I do like the idea of walking outside for several hours. I’ll get my supply of vitamin D and be a happier person.

However, being San Francisco, there is no guarantee of sun. It’s very bright here right now. I keep having to sh...