It comes down to a question of attention: it's difficult to use the Net distractedly, unlike the television or the radio.

It comes down to a question of attention: it's difficult to use the Net distractedly, unlike the television or the radio.

归根结底，这是一个注意力的问题:不像电视或收音机，人们很难心不在焉地使用网络。

-- Umberto Eco 乌姆贝托生态