Concrete example is the ToC. When he started building it, we had a viewer that just loaded and displayed 30040s with 30041s listed using "e" tags. Easy-peasy. Then we switched to "a" tags and broke the ToC. Okay, hide ToC and update ToC. Then we switched to lazy-loading. Okay, update ToC. Then we added support for viewing individual articles. Okay, update ToC. Then we added support for blogs. Okay, update ToC. Then we added support for wikis. Okay, update ToC. Then we added support for longform. Okay, update ToC... ToC never gets merged. 😂🤦🏻‍♀️