The Operating System
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
An operating system is the core piece of software managing and controlling the interconnection of hardware and software on a computer — loaded at start-up, and required to operate any computerized device.
Show
Every phone, laptop, and watch in the room booted one before doing anything else.
Watch for
Core software, not optional middleware.