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Do you mean that we should be careful not to count cases of natural infant mortality as infanticide; or that the high infant mortality rate changes the moral calculus of infanticide; or something else?
I meant "evaluation" only in the limited sense of "understanding the mental states of someone else". I bring this up for the boring reason that people seem to forget this (most prominently in the butchered interpretation of life-expectancy at birth as being life expectancy at 18, which has only become a good approximation in modern times)