For an application that requires real-time data updates and complex state management, how would you design the architecture using Flutter's BLoC pattern?

To design an architecture in Flutter's BLoC pattern for real-time data updates and complex state management, integrating a WebSocket for real-time updates with BLoC is a suitable approach. This allows the application to receive and handle real-time data seamlessly, ensuring a responsive user interface. The BLoC pattern, when combined with a WebSocket, facilitates efficient state management by reacting to events in real-time, making it well-suited for applications with dynamic data requirements.