From: Miguel Carrasquer Vidal
Message: 4585
Date: 2000-11-05
>Of course, PNG has a completely different and much more variegated topography than Australia, with a lot of rough terrain, highlands, rivers, and tropical forests. There is agriculture and animal husbandry there. Additionally, a substantial part of PNG was colonised by Austronesians pretty recently. All these factors are potential equilibrium-busters and would account for numerous (if small-scale) "phylogenetic explosions" in the history of the region.You're right, I forgot to mention Austronesian. A different boatload
>What Australia and PNG have in common is the genetic diversity of their languages. Languages are more numerous and families tend to be slightly bigger in PNG (Austronesian, of course, is a case apart); there is probably more creolisation as well (as opposed to mere diffusion). Anyway, whatever the local conditions, old and relatively undisturbed linguistic areas tend to be occupied by many tiny families and linguistic isolates, and the construction of large-scale family trees for them proves difficult or impossible.Well, yes, that's only to be expected. What I'm skeptical about are