道理与证明 今天，YouTube推送了一个视频《林群院士：教科书讲得太复杂，学微积分只需要一个案例》，好奇地点了进去。 关于学习微积分的故事 … ← Predicting viewership for #TidyTuesday Doctor Who episodes A little correlation puzzle, leading to a discussion of the connections between intuition and brute force →