Table 1. Bertalanffy’s classification of teleology; after von Bertalanffy (1950, 159ff; reprinted in 1969a, 77ff).

1 – Static teleology (fitness)	2 – Dynamic teleology (directiveness of processes)
	(i)	(ii)	(iii)	(iv)
	Direction of events towards a final state expressible as if the present behaviour were dependent on that final state	Directiveness based upon an arrangement of structures	Equifinality (independence of the final state from the initial conditions and from the ways taken to reach it)	True finality (purposiveness); determination of the actual behaviour by the foresight of the goal