>when and how it showed up (or not) is a separate issue. I don't think new data will help. We know the changes in the human lineage; even if we knew their func

>when and how it showed up (or not) is a separate issue. I don't think new data will help. We know the changes in the human lineage; even if we knew their functional meaning, we cannot conclude whether they are adaptive or not; fixed alleles reveal little about their fixation time, etc.