The Peninsula Commute train takes him chugging through a loose necklace of towns: San Mateo, Hillsdale, San Carlos, Redwood City, Menlo Park, and finally Palo Alto. Traveling up and down the peninsula, Penumbra has come to the conclusion that San Francisco is not actually part of California. The city is pale and windswept; Palo Alto is green and still, with the scent of eucalyptus strong in the air. The sky here is pearlescent blue, not platinum gray.