The late autumn holiday of Halloween ranks high as a topic of conversation at present for Mabel Watson Payne (she will be a Robot this year and tells me that I will be a Robot, too – although I had not heard until today about the part she had dreamed up for me inside her head). But it feels funny to be talking about Halloween while we go outside and climb the hill to Huntington Park in San Francisco on a Friday afternoon that could pass for a midsummer afternoon anywhere.