I mean, sudden and drastic population declines are literally the subject of the thread. Or more specifically, that humans in many parts of the world are reprod

I mean, sudden and drastic population declines are literally the subject of the thread. Or more specifically, that humans in many parts of the world are reproducing at below replacement rate. Reproduction below replacement rate means that those who do not reproduce offspring are not replaced by the offspring of those who do. Nobody is arguing that Generation B aren't the offspring of those who reproduced, they're arguing that this detail is essentially irrelevant to how many children Generation B will have and therefore birth rate decline need not be "self correcting" and empirically isn't in much of the world.