Abstract
The challenge that Glenn Summerhayes set archaeologists at the beginning of this century was to model the nature of maritime colonisation and interaction that could account for the rapid and widespread appearance of Lapita pottery in the western Pacific from about 3350 years ago (Summerhayes 2000:1). Not content to sit about and let the challenge linger, Glenn’s ongoing field projects in the Bismarck Archipelago and on the New Guinea mainland, undertaken alongside numerous students, Papua New Guinean archaeologists and local stakeholders, have dramatically refined our understanding of these processes (e.g. Summerhayes 2007b, 2010, 2022). It is now apparent that Early