Interesting.
Except there were no cassava in Australia before the English settlers came. And yams were cultivated in Polynesia and Melanesia around Australia but NOT in Australia itself where it was the bush yam that was collected (not cultivated) and could be a hassle to dig up because it was more than 90 cm below ground.
In any case, kudos to this guy for doing wordless DIY but this is no “primitive” technology
