Programs and labs must take into account archaeology: the Caucasus was a climatic refuge and a bridge in the Neolithic expansion. What archaeological proofs we have for EHG going south?Now, some "modelers" in the online community, using other methods, claim there might be some CHG in EHG. Perhaps there is, perhaps there isn't. No disrespect to these people, but my instinct is to wait for the papers from the major labs to see if there are changes. Different programs are sensitive to different inputs.