在信息爆炸的年代，人们更需要被引导和告知，哪些信息更值得被关注，哪些噪音可以被略过。这就像物质极度丰富的时代中，人们可以在任何渠道进行购物，但他们依然愿意走进costco消费——那里不提供最多的选择，但货架上的每件商品都被精心筛选。
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But more than that, they taught me how much more fun it was to learn by playing with an interactive, dynamic program instead of passively reading about concepts in a book. […]