我在上一篇文章表达了对Nature上一篇关于active learning的文章一些质疑。今天我又看到Nature上发表了读者来信，里面表达主要的观点一段话：

Unless critical thinking is allied with a strong fundamental knowledge base, there is a risk that students will develop a ‘Swiss cheese’ understanding of science — with a good grasp of their chosen subject areas but major gaps in others. This can produce niche researchers who lack a proper understanding of their wider field.