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They agree, however, that explanation is needed of how a weak, vulnerable and not-very-successful protohuman later came to dominate the whole world, and reach outward into the universe.

“In several years it’ll just be a useless appendage, like the last protohuman with a tail,” Engadget wrote in its review of the most recent MacBook Pro.

Those with ultrahigh thresholds are those whom “we think of as belonging to somewhat different categories: protohuman like children, subhuman like the mad or suprahuman like saints.”

Pattison tells the wild tale of the discovery of Ardipithecus, a protohuman that lived 4.4 million years ago in Ethiopia.

It turns out that Denisovans were a distinct lineage of protohuman that split off from Neanderthals about 400,000 years ago.