[verytrivial]

There is compelling but rare evidence of habitation back as far at 60,000 years. But there is zero reason to assume the continent was sealed to migration at any point. In fact it was disconnected and reconnected by land bridges more than once over that period. Culture is a process not an artifact. Regarding the speed of change, tally the vocab contribution of Norman French, Anglo Saxon, Roman and Brittonic languages to modern English -- the 'place' has almost forgotten the contributions made beyond about 1,600 years ago even if there are living residents that are genetically linked to inhabitants from thousands of years before.

[AlotOfReading]

Australasia has not been joined to the rest of the world by land bridges for tens of millions of years. That's why so much of the fauna is strange and unusual. Humans are one of the few mammalian species that have managed to cross the deep water barriers on our own.

[verytrivial]

True, you've never been able to just walk it like you could to Tasmania. I mean millions of years ago, Australia was further south -- it's been inching north[1]. Sea levels around the last glacial maximum[2] made the distances much more 'canue-able'. I would consider that at least 'more connected', but you are correct.

[1] https://www.theguardian.com/science/2016/aug/03/mind-the-gap... [2] https://phys.org/news/2018-04-island-hopping-route-people-au...

[runsWphotons]

New Guinea was until end of ice age though I believe.