Once upon a time I had a craving. I went down to the kitchen and opened the pantry doors, pushing aside bottles until I found the one I was looking for: strawberry jam. I picked it up and stared at it a long time. I don’t know why I like to make life harder for myself. I could have just toasted some bread and slathered on the jam, craving satisfied, but I pushed that idea aside. As I held on to the bottle, staring at but not really seeing the label on the jam, a flicker of a memory crossed my mind.