while it is staggering what has been done in mito DNA and so on to map the choke points and paths of particular species, notably humans, the looking at the beasts that walk obligately on us, in us, and on and in others around us provides a whole new set of points from which to triangulate from. I find it to be very very cool stuff.
If the notions are to hold, they should survive rational convergence.
Dating of pigment genes that one would require for hairlessness should converge with vermin differentially dependent on different parts of our bodies, and they appear to do just that. But this opens a whole planet of possibilities to iteratively nail things down, nitrogen fixing symboints and their dicot hosts, mutihost obligate parasites (malaria comes to mind .. us the mosquito and the parasite walking measurably in tandem), there is a trove of stuff for folks to look at when they bust out of the box of just looking at one species and its roots, and requiring that co-evolving things should share common choke points and diversion episodes.
Its the kind of thing predictions and falsifiabilty are made of.
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