ORDER BY pdb.score(id) DESC
为了测试这个新模型的理解极限，他随手甩出了一道极其刁钻的测试题：「给我画一张设定在古威尼斯的《寻找沃尔多（Where’s Waldo）》，但里面要找的不能是人，得是一只穿着蓝色条纹飞行服的水獭。」
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多年前，我把自己在创作工作中的经验与对产品设计的态度，总结为十条原则（十诫）。我认为它们在今天依然有效：，推荐阅读新收录的资料获取更多信息
The fourth requirement (“Dynamic”) ensures that we only create dependencies when they are actually needed. This is easiest to see with conditional formulas, so something like IF(, slow_calculation(B1)). If the condition is true, this formula returns the value of (and therefore depends on) the cell B1. But if the condition is false, the formula returns nothing — and if B1 changes, this cell should not be updated. This is a dynamic dependency — the dependency only exists if is true.
能力越大，包袱越重，这事急不来。