Continuity features include Handoff, Phone Calling, Instant Hotspot, and SMS. You can start an email or document on iPhone, for example, and then pick up where you left off on your iPad. You can use your iPad or Mac to make and receive phone calls through your iPhone.
The purpose of Poka-Yoke is to develop processes to reduce defects by avoiding or correcting (design to show alerts or warning messages to user) mistakes in early design and development phases.
The purpose of The Declaration of Independence, as the aforementioned quotes demonstrate, was to declare independence (something which should be obvious from the title of the document), to show foreign powers that their actions were fully justified, and to persuade citizens in England and the colonies to sympathize with their cause.