There is little that we can usefully add to Erika Hagelberg's response, and we will therefore limit ourselves to a few salient points.
Bahn, Paul and Flenley, John
"A Final Reply to Langdon,"
Rapa Nui Journal: Journal of the Easter Island Foundation: Vol. 9
, Article 5.
Available at: https://kahualike.manoa.hawaii.edu/rnj/vol9/iss1/5