目前许多关于这种衰退是如何产生的推论，多数都归结为互联网这个新市场的兴起，现在流行的卡片是基于类似于口袋妖怪之类的游戏卡片。
There's been much speculation on what's caused such a decline, but many credit a flooded market, the popularity of card-based games such as Pokemon, and of course, the rise of the Internet.
对于喜欢玩《口袋妖怪》这种卡片收集类游戏的孩子，Klopfer提出了一个特别的观点：他们每一次的游戏过程都好像是在上一堂统计学课程。
Klopfer raises a great point about kids who play card-collecting games like Pokemon: they get a light course in statistics each time they play.
对于喜欢玩《口袋妖怪》这种卡片收集类游戏的孩子，Klopfer提出了一个特别的观点：他们每一次的游戏过程都好像是在上一堂统计学课程。
Klopfer raises a great point about kids who play card-collecting games like Pokemon: they get a light course in statistics each time they play.
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