I was 30 years old when I encountered, in person, my first alien. Or at least I thought I was. On a hot summer afternoon (July 5 to be precise), I cycled from my home to the Chicago Aquarium. Once inside, I made a mad dash to find this alien, a giant Pacific octopus called Sawyer. And there he was, strikingly beautiful and not, as I expected, hiding in the corner but crossing his tank to investigate something on the other side. He truly was from another world. Sawyer the Octopus I had heard that octopuses were super smart, but…