Can't find the source, but I remember reading an author from the 60s who predicted the internet, but also predicted you'd treat it like a catalog and still have

Can't find the source, but I remember reading an author from the 60s who predicted the internet, but also predicted you'd treat it like a catalog and still have to call in and read off the product numbers you wanted to order and communicate them to a human operator -- even for someone who could predict the internet, it still seemed like a leap to suggest that even the order itself could be processed over that same network!