That would still be an evolutionary progression according to Henneberg. It's just that you have to go farther back to where we lost the tail before the species changes. Or something.
Actually, evolution says that when you have enough data available to you it *should be* hard to say where one species leaves off and another begins. But, as Ichneumon has explained already on this thread, Henneberg's analysis is more naive than insightful. It makes fun newspaper copy but don't expect it to win much influence.
The way I read it is Professor Henneberg has a problem with the gung-ho clowns who jump to speciation conclusions when variation within a species is all the data reveals.
Once again, the overreaching "scientists" get slapped down by Professor Henneberg, Professor Harrison and Professor Stringer, experts in their field. These guys clearly take a conservative approach to science -- something that is not common practice, where as it should be a requirement.
Professor Maciej Henneberg, of the University of Adelaide, a world authority on fossil human anatomy.
Professor Chris Stringer, a leading expert on human fossils at the Natural History Museum, London.
Geoffrey Harrison, emeritus professor of biological anthropology at the University of Oxford.