If, in the course of evolution, species A incorporated members of B as organelles, how is the problem thus solved different from the members of
Aves species C ingesting selected pebbles or members of Corvus selecting and bending a straw, stalk or stick ?
Heidegger's chief error may have been his faux insight into
tekne (technique, Technik.) Husserl's second bit of folly was to follow Heidegger on the telescope.
Compare : a philosophical anthropology of play, dance and concept.
[ the chorus heard in response : "Heidegger was not doing philosophical anthropology !" ]
What offended Heidegger were the diesel tractors in the fields. He took the trains to see and talk with Jaspers on Jaspers' wife's small inheritance (from a business venture?) and would one day take an aeroplane.
[ the chorus : Heidegger and Husserl were on a hike together ... ]
When the hike began, Husserl was going on a hike with Heidegger, but when they returned, Heidegger had taken Husserl somewhere the old professor need not have gone - or gone along with (
mit-fahren ) ...