科学家们利用座机和手机上的大量交谈记录在地图上标示出整个英国的社交网络。

Using reams of phone records, both landline and cell, scientists mapped out social networks across the entire United Kingdom.

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如今，手机已经比汽车和信用卡更为普遍（世界上登记的汽车有8亿辆，而信用卡只有14亿）。普通座机花了100年时间，才在世界上80%的国家中获得普及，而手机只用16年就完成了这个过程。

While it took 100 years for landline phones to spread to more than 80% of the countries in the world, their wireless descendants did it in 16.

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