As its name suggests, this spins the software equivalent of a roulette wheel to generate a randomtree, then examines how snugly the branches of that tree fit the modern foliage.
WHO's Essential Drugs Programme (a worthy attempt to work out a minimum list of the drugs that should be available in every country in the world), describes the organisation as being like a Christmas tree on whose branches new projects are hung at random, frequently without regard to what is there already.