Higher ed is like employer based health insurance in that they are both weird path dependent historical accidents. People want cheap healthcare, and it got shoehorned into an odd employer fringe benefit system that really is not at all related healthcare in any intrinsic way. People want job training, and it got shoehorned into extra departments at liberal arts universities intended as aristocrat finishing schools. J…
It grows completely around the tree and creates its own trunk on the outside. The tree underneath eventually cannot get any nutrients in its sap and dies. The vine then feeds on the tree as it rots away on the inside.
Eventually you have a hollow tree.