I’m sure we’re all familiar with the loathsome 404 error that explains to us how the webpage we were looking for wasn’t found, but it never tells us why the webpage wasn’t found, which is something that man by the name of Tim Bray wants to fix. Bray, who is a co-author of the XML specification, wants web developers to start adopting the 451 error code, which will allow websites to alert users when the part of the website that they’re trying to access has been restricted due to legal reasons, with the 451 number being a reference to Fahrenheit 451.