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Re:For many young South Koreans, dating is too expensive, or... by _Microft on Sunday May 12, 2019 @07:39AM (#19891316)
Actual problem is that writing "TFR" or "Total Fertility Rate" takes a constant time (independent from the number of readers) while everyone looking it up is function of the number of readers.

Your parent comment is right in pointing out that it is not a familiar abbreviation.

Re:For many young South Koreans, dating is too expensive, or... by oh_sigh on Sunday May 12, 2019 @07:42AM (#19891327)
I suspect people use obscure acronyms like this as a signal that they're familiar with the problem domain and that you should listen to them.