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A comment on Aboriginal Australian genomes reveal Indian ancestry. Parent comment

Re:Aboriginal Australian genomes reveal Indian ancestry by grecy on Wednesday March 01, 2023 @08:48PM (#34990886)
> The simplified and (generally) commonly accepted narrative is that a cohesive group arrived here 45-60,000YA,

Isn't the fascinating question "How did they arrive" ?

My understanding is that timeline vastly pre-dates any kind of ship to make that voyage.

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Re:Aboriginal Australian genomes reveal Indian ancestry by prawn on Wednesday March 01, 2023 @09:08PM (#34991024)
I think the gap between Asia and PNG (then connected to AU) has got down to 90km. Doable with bamboo rafts? Viewing a mountainous island from an elevated position would give them reason to attempt it. Timor to PNG is suggested as the water crossing needed.
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Re:Aboriginal Australian genomes reveal Indian ancestry by grecy on Wednesday March 01, 2023 @10:14PM (#34991473)
And enough people made that crossing successfully to create a stable population of 320,000 people [1] without in breeding problems?

[1] https://www.aihw.gov.au/reports/australias-welfare/profile-o...

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Re:Aboriginal Australian genomes reveal Indian ancestry by rippercushions on Thursday March 02, 2023 @12:24AM (#34992302)
Aboriginal Australian do, in fact, suffer from a disproportionate number of hereditary diseases:

https://www.mja.com.au/journal/2020/212/5/lessons-learned-ge...

While there is considerable genetic diversity between Aboriginals as a whole, the diversity of individual communities is often quite low, and in response many communities evolved elaborate kinship systems to avoid too much intermarriage.

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