Growing up I had the crib to myself for almost a month and had no contact with no one.
Just in a big ass house by myself. I didn't tell my boys because I didn't feel like having them over.
By day 9 I was starting to get cabin fever, starting to feel weird and was waiting for my folks to come home
That's with PS2, internet, phones, tv, movies and leaving the house occasionally. In complete darkness you'd go crazy.