The reason I chose IQ 132 (or rather the top 2% which can vary from one test to another) is explained in the comment I linked to about this. Briefly: if you have that IQ, you qualify as gifted by most IQ based definitions of giftedness.
One user with IQ 120 leaving and one with IQ 100 entering decrease the average IQ, but describing that as “losing giftedness” sounds kind of fucked up to me.
One user with IQ 120 leaving and one with IQ 100 entering decrease the average IQ, but describing that as “losing giftedness” sounds kind of fucked up to me.
For that matter, it is currently the case that users with IQ 132 entering would also decrease the average IQ (and cause LW to “lose giftedness”).