The tradition began as a nod to how far society has come since 1557, when Pope Paul IV first established The Index of Prohibited Books to protect Catholics from controversial ideas.

这个传统是为了适应多远社会的到来，因为1557年，教皇保罗四首先建立起“违禁书籍索引”，以防止天主教徒受到有争议的想法之害。

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Sure enough, Sir Paul McCartney was at the next table when Debbie, my wife, arrived with index cards.

WSJ: Raising Kids in the City

In a recent blog post, Paul Krugman noted that the sub 2.5% increases in the Consumer Price Index (CPI) over the past few years are all that is needed to prove me wrong.

FORBES: Doubting The Big Lie That Inflation Is Not A Threat