"Carnival food," he said, "has this strange property. Each bite you take tastes increasingly artificial, oily, and overly sweet. Until you get done, and wonder why you ate all of that. It's truly magnificent."
"Because time travel into the past is impossible," Design said. "I can show you the math."
"Wait," Yumi said. "Time travel into the future is possible?"
"Um, yes, dear," Design said. "You're doing it now."
"Oh. Right."
It's more than eyes, more than posture, more than brow. Human beings are bundles of emotion puppeting muscles like a marionette. We emote not only with our bodies, but with our very souls.