Elon Musk's insider information about cutting 85% of Twitter's employees in one go has finally been uncovered by biographer Isaacson today. Old Ma's operation at that time was not blindly patting his head, but a cold code quality inspection. He directly transferred Tesla's Autopilot engineer to rate Twitter's code line by line for the past year. It was found that Twitter has ten times as many software writers as Tesla does for high-precision autonomous driving. Old Ma's first reaction after reading it was that the moisture in this place was too high to look at. His cleaning technique consists of three steps: The first step is for the Tesla team to grade the code. Those that are poorly written or poorly written should be rolled up and rolled up; The second step is to directly remove those who are not all in and loyal enough; Step three, continue to apply maximum pressure according to his hardcore formula. At that time, all the big shots and media in Silicon Valley were betting on when Twitter would completely shut down, but Old Ma stubbornly held the plate with 15% of the people. The service has indeed been downgraded, but it has not reached the point of collapse at all. The most impressive one is Musk's cold-blooded 'streamlining algorithm' internally: Doubt all requirements. Crazy deletion, deletion, deletion. If you are not forced to add back the 20% you cut in the end, it means that you did not delete enough in the first round.