I think it's possible to imagine anything if you try hard enough. But, in all seriousness, I grew up in a time before the Internet and didn't have Internet until I was an adult. I have read reports that show that we are addicted to social media, gaming, and our smartphones now so I think if the Internet were to go out unexpectedly people would have a hard time adjusting to the new reality. I'm not sure how communication would change without the Internet or how we would stay up to date on the news or pay our bills. Because we have come to rely so heavily on the Internet for literally every aspect of our lives. People would have to actually leave their houses in order to learn about the world and socialize with each other again. Mentally, it would be a HUGE adjustment to what we have now.
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From @ivyriane