“Can you slide that down?” said the passenger beside me, speaking through his mask. I looked at him, confused by his request, because it was 11 in the morning, not an hour when most passengers wish to catch a nap. “The glare,” he said by way of explanation. He nodded at his phone, on whose screen was a game featuring animal characters, then gestured toward the seats in front of us. I saw then that mine was the only window shade open in our section of the cabin, a long, dim, tubular chamber of human galley slaves apparently chained to their devices.