ELI5: Explain Like I'm 5

The Library of Babel

The Library of Babel is like a giant house with an infinite number of rooms. Each room has four walls and each wall has four shelves. On each shelf there are five rows of books and each row has thirty-five books. Each book has 410 pages and each page has 40 lines of text. All the books in the Library of Babel are different from each other, even though they all have the same number of pages and lines on each page. This means that the books contain all possible combinations of letters, numbers, and punctuation marks, like the entire dictionary, a book of Shakespeare's plays, even books that make no sense! It's like a giant puzzle that nobody yet has solved.