If you super search PM Discussion for Titles = "number of replies", no replies you will find this has been mentioned many many times. For example Discrepancies in the number of replies, Number of replies discrepancy and Wrong number of replies on Monastery Gates.

DWIM is Perl's answer to Gödel

In reply to Re: number of replies displayed beside a node by GrandFather
in thread number of replies displayed beside a node by jesuashok

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