First, Mark Liberman answers a reader on whether the British spelling -our, as in "honour" and "colour", is really so old.

首先，Mark Liberman回答了一位读者关于英式拼写“- our”的问题，他问“honour”和“colour”这样的拼写是不是太过时了。

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That said, Mark Liberman, a Professor of Linguistics at the University of Pennsylvania, decided to take a more analytical approach.

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The similar trajectory of word birth and death across time in three languages is "striking, " though the research is still too new to evaluate fully, says Mark Liberman, a professor of linguistics at the University of Pennsylvania.

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