… engine or Facebook’s news feed works. Sure, the PR folks will tell you that it’s proprietary code. But the ugly truth is that the code has been patched to smithereens to address countless types of manipulation and gamification (e.g., SEO to bots). It’s quaint to read the original “page rank” paper that Brin and Page wrote when they envisioned how a search engine could ideally work. That’s so not how the system works today.