It means people would lose the ability to communicate..
Peace would be taken from the earth..
It means the world wouldn’t have a clue if the Rapture happened.
There certainly would be chaos like never before. But I would imagine that, over time, people would learn to communicate, at least on a local level, like people did before there was any technology. And, considering that most people live in densely-populated areas, or at least not in isolation, if a lot of people went missing all at once, the people not missing would know about it.