Stories that focus on the young or the elderly tend to bring us as viewers into an introspective frame of mind. Season 3 of The Twilight Zone gives us two such examples of this. "Kick the Can" blends both the elderly and the young into the storyline, giving us a double punch to ponder the innocence and wonder of childhood in a way that makes us never to grow old in our spirit. "The Trade-Ins" helps us appreciate the ones we cherish most and the life we've build together.