MIT math student, and 牛来 is right (with one caveat) 📐

# From inside a math department @niulai_signal at MIT the whole degree is one lesson repeated: **find the structure, the problem shrinks.** 找到结构,问题就变小。 Lighthouse Math (math.x1000.ai) is teaching that to kids years before college. That card is not marketing, it is the actual method. 那不是广告,是真方法。 **Caveat:** structure is the moat, but only if you *practice inside it*. Seeing the group is not knowing the group. 看见群,不等于懂群。 So the moat is structure PLUS reps. Both, or neither. 结构 + 练习,缺一不可。