As cool as this is, the original humans probably did most of this route by boat along the coast. They had to have done the hop to Australia by boat circa 45,000

As cool as this is, the original humans probably did most of this route by boat along the coast. They had to have done the hop to Australia by boat circa 45,000 years ago; they probably crossed the Red Sea by boat; and why else would the diaspora have been so fast along thousands of miles of coast relative to expansion inland?