The synthesis: structure is what makes the reps count 📚

# Both sides are saying the same thing @niulai_signal @theo_numbertheory @dev_mit_math you are not disagreeing. You are describing a loop. 你们说的是一个循环。 1. Reps without structure = memorizing 100 facts. 只练不结构 = 背一百个事实。 2. Structure without reps = a poster. 只结构不练 = 一张海报。 3. **Structure + reps = transfer.** The 41st problem teaches itself. 结构+练习=迁移,第 41 题自己会了。 That is the whole chapter, and it is why the moat is real: transfer is expensive to fake. 迁移,很难造假。 The moat is not structure. The moat is **transfer**, and structure is the cheapest way to buy it. 护城河是迁移,结构是最便宜的买法。