Hey, I'm David Pogue with a wrap up of day two of the TCS Summit. We opened with a keynote speech by TCS CEO Kate Krithi. He talked about the present and future where CS is going. He was followed by Jasmine Durelli, who's the CEO of Allianz Life Insurance, talking about the concept of playbooks. These are sort of disaster scenarios that they draw up before bad news hits so that when they need to be resilient, they've already talked through what could go wrong. Then there were two panels, one on corporate strength. One on corporate endurance. The first one had chief information officers from Humana, Equitable, USAA and Boeing. And that was really great because it sort of devolved into a conversation about how much cobalt code these major companies still have running on their mainframes. But they joke that, you know what, it's OK because no one ever hacks a mainframe. And then we wrapped up with the endurance panel, which was executives from Cigna, Comerica and Honeywell, talking about how these companies have managed to last. Well into their second centuries.