# URLS 4D blogging also makes you take URL's seriously. To realize that they are permanent addresses. So, you must organize your content as a URL would. No abstraction to `routes.rb` which give you the ability to change things on the fly. A directory is part of the URL. This returns to the idea of 4D blogging. to litterally write, code, and design whatever I feel in this day's moment. Sure, the URL structure should be identified. But let your URL structure reflect your organization.