Once one understands that a text message travels wirelessly as a stowaway within a control channel, one sees the carriers' pricing plans in an entirely new light.

一旦人们了解到无线传输的短信，是在信道中偷渡过来的，就会以一个全新的视角看待运营商的定价计划。

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One hopes that Twitter--and text-message costs--can teach a new generation the same lesson.

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