I wasn&#x27;t talking about &quot;styles of failure&quot;. I&#x27;m talking about this very thread, where people are popping up, looking at a program demonstrating success in mathematical education, a thing proved to be difficult by well-funded repeated and repeated and <i>repeated</i> failure, and all they&#x27;ve got to say about it is complaints about how it&#x27;s not fair that it&#x27;s just going to rich people.<p>This is not the time to be worried about fairness. This is the time to figure out what works. When you have that, <i>then</i> worry about fairness. Demanding that all the experiments be done equally to everybody at scale produces total paralysis, and is in no small part responsible for the total paralysis we witness in school reformation right now. You simply can&#x27;t do anything that way.