The cast of Hulu's "The Dropout" marvel at Amanda Seyfried's uncanny ability to go from being herself one moment to being a high-intensity tech exec the next. Co-stars Sam Waterston ("Law & Order"), Dylan Minnette ("13 Reasons Why"), Alan Ruck ("Succession"), Michaela Watkins ("The Unicorn"), and Elizabeth Marvel ("Homeland") share what blew them away about Amanda's performance, and then Amanda reveals her unexpected motivation.