There is a book about this that they don't seem to mention: Wonderland: How Play Made the Modern World by Steven Johnson. https://www.goodreads.com/book/show/

There is a book about this that they don't seem to mention: Wonderland: How Play Made the Modern World by Steven Johnson. https://www.goodreads.com/book/show/30798471-wonderland https://www.goodreads.com/book/show/30798471-wonderland It's not bad. It pushes the hypothesis to breaking point but there is something in the idea.