Every non-trivial application maintains state, such as a word processor's current document status or a spreadsheet's contents, alongside user-related states in web applications.
Voice applications like Siri must manage speaking/listening state to avoid feedback loops, highlighting the complexity involved in maintaining conversational context during interactions.
In a football game, state variables such as which team has the ball, field position, and score are essential to accurately reflecting the game's current status.
The concept of state is fundamental in software design, impacting everything from user interface behavior to the functionality of voice-activated assistants.
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