The Dreaded 404 Page and Its Little Understood Cousin: The 402 Error

Did you know that back in the earliest days of the Internet, there were a list of error codes created for situations that the web’s first designers thought would be highly possible in the future? Of course, the dreaded 404-error is the one that most of us know well: page not found. It was ubiquitous among websites of the 90s and continues to be part of our online lives. For some, it has even offered a canvas for creativity as web designers have fun with it.

Far less known is the 402-error...