Адам би си останал парче глина без дъхът (духът) божий!
Без връзката си с непроменяемия Атман, Пракрити би била безформена и безструктурна  субстанция.
Метафорично, Атман е съзидателния "дъх" на Пуруша.
Без непроменяемия Атман Пракрити би била Мулапракрити:

Most of the Samkhyan cosmology is concerned with the unfolding of the prakriti principle; or more precisely mulaprakriti or unmanifest root-nature (equivalent to the Greek concept of Hyle or formless matter).  Mulaprakriti is described as "unmanifest" (avyakta), "uncreated" or "unmade" (avikriti), and "the chief one" (pradhana) [ Gerald J. Larson,  Classical Samkhya, pp.160-1, (Motilal Banarsidass, Delhi, 1979)].  It is the original primordial root-nature from which everything else arises through a process of self-unfolding, triggered through the proximity of the purusha or centre of consciousness.

 Mulaprakriti itself contains or is made up of three primary qualities, the three constituents or strands, called gunas.  In the unmanifest Mulaprakriti these exist in a state of equilibrium and balance, and so there is no manifestation.  When the gunas are disturbed however through the presence of the purusha the equilibrium is destroyed, and creation, both gross and subtle, comes about. 
The creation hoiwever is not simple but involves a series of 23 fuurther tattwas, the later ones being derived from or unfolding out of the earlier ones.  The basic series is as follows:

From prakrti emerges mahat ("the great one"), also called buddhi.  This is the subtlest form of mental activity, and the source of will and the unconscious.  From buddhi evolves ahamkara, the "I-maker", which is the source of the sense of ego or individual identity.  From ahamkara there is a four-fold unfolding into mind (manas), sense organs (jnanendriyas), the organs of action (karmendriyas), and the subtle elements (tanmatras). Of these the mind and senses are predominantly sattva, the organs of action rajas, and the subtle elements tamas.  These latter are the source from which evolve the five gross elements of the material world.

Мулапракрити е името на трите гуни в състояние на равновесие. Будистите биха казали, че тя не съществува реално, а е единствено обозначение на трите фундаментални дхарми (свойства, гуни).

ТЯ е Мулапракрити, когато е заедно с Пуруша, което представлява Брахман.