Overview
Media and Formal Cause is a book bearing the authorship of Marshall McLuhan together with his son and longtime collaborator Eric McLuhan. It belongs to the body of McLuhan material that appeared after Marshall McLuhan’s death in 1980, assembled and shaped by Eric McLuhan, who worked with his father on several of his most theoretically ambitious projects and who continued to develop and publish McLuhanite ideas throughout his own career. The book was issued by NeoPoiesis Press. Rather than a narrative or a single sustained treatise, it functions as a focused collection of essays and reflections organized around one specific and rather technical idea drawn from classical philosophy: the notion of “formal cause,” one of the four causes described by Aristotle.
The work is best understood as an attempt to isolate and clarify a single conceptual thread that runs, often implicitly, through the whole of Marshall McLuhan’s media theory. Where much of McLuhan’s popular reputation rests on slogans and provocations, this volume turns to the philosophical scaffolding beneath them, arguing that his approach to media cannot be properly grasped without recovering the idea of formal causality that modern thought had, in the McLuhans’ account, largely set aside.
The idea of formal cause
The organizing concept of the book is Aristotle’s distinction among four kinds of cause: the material cause (what a thing is made of), the efficient cause (the agent or force that brings something about), the formal cause (the form, pattern, or structure that makes a thing what it is), and the final cause (the end or purpose toward which something is directed). The McLuhans’ argument is that modern science, and modern habits of explanation more generally, became preoccupied almost exclusively with efficient causality — with the tracing of one event mechanically producing another, cause pushing effect in a linear, sequential chain. In doing so, they contend, the West lost sight of formal cause: the way a form, structure, or environment shapes and produces effects not by pushing on things from behind but by configuring the whole situation in which they occur.
This distinction is central to Marshall McLuhan’s most famous claims. The insistence that “the medium is the message” is, on this reading, precisely a claim about formal rather than efficient causality: the significance of a medium lies not in the particular content it carries (which would be an efficient, content-by-content account) but in the form of perception and social organization the medium as a whole imposes. A technology, an alphabet, a printed book, an electronic network — each restructures the sensory life and the relationships of those who use it, regardless of any specific message transmitted. The medium is a formal cause because it operates as an environing form, a “ground” that reshapes everything within it. The book presents formal cause as the philosophical key that unlocks this and related McLuhan formulations, positioning it as the true underpinning of the entire project.
The volume connects this to other characteristic McLuhan devices. His well-known contrast between “figure” and “ground” — the figure being the thing consciously attended to, the ground being the surrounding environment that usually goes unnoticed — is aligned with the logic of formal causation: effects come from the ground, from the environment as a formal whole, rather than only from the figures we consciously perceive. Likewise the notion, developed extensively in his later work, that new media create total environments that act upon us below the threshold of awareness is framed here as an expression of formal causality operating at the level of the whole rather than the part.
Relation to McLuhan’s body of work
Marshall McLuhan (1911–1980) was a Canadian scholar who began as a professor of English literature, trained in the study of rhetoric and the classical trivium, and became in the 1960s one of the most widely discussed and controversial theorists of communication and media in the world. His major books — including the study of print culture and the transition from oral to typographic society, and the work that made “the medium is the message” a global catchphrase and introduced the idea of the “global village” — established him as a figure who read technologies as extensions of the human senses and as agents that transform culture and consciousness. His methods were notoriously aphoristic, associative, and resistant to conventional academic argument, which made him at once enormously influential and frequently dismissed by more systematic scholars.
Media and Formal Cause belongs to the tradition of McLuhan’s later and posthumous work in which the underlying logic of his method was made more explicit. In his final years McLuhan, again working closely with Eric McLuhan, developed the idea that media could be analyzed through what they called the “tetrad” or the “laws of media” — a set of four questions asking what a given medium or artifact enhances, what it renders obsolete, what it retrieves from the past, and what it reverses into when pushed to its limits. That framework, articulated in the collaborative project on the laws of media that appeared after Marshall McLuhan’s death, was itself grounded in the conviction that media should be examined as formal structures with predictable patterns of effect. Media and Formal Cause can be read as an extended meditation on the philosophical premise standing behind that later apparatus: the recovery of formal cause as a legitimate and even necessary mode of explanation for understanding technology and communication.
The book also reflects Marshall McLuhan’s deep engagement with the classical and medieval intellectual traditions — with rhetoric, grammar, and dialectic, and with the Aristotelian and Scholastic philosophy that shaped his thinking as a Catholic convert and a scholar of the trivium. His return to Aristotle’s causes is not an eccentric borrowing but a characteristic move for a thinker who consistently read modern media through the lens of ancient and medieval learning. Eric McLuhan’s contribution reflects his role as the interpreter, systematizer, and continuator of that project, extending and clarifying ideas that his father often left in compressed or oracular form.
Argument and significance
The central contention of the book is that the neglect of formal cause in modern thought has crippled our ability to understand media and their effects. So long as we look only for efficient causes — asking who did what to whom, what content produced what response — we remain blind to the far more powerful action of media as environments that reshape perception and society as wholes. To understand media, the McLuhans argue, is to learn to perceive formal causation: to attend to the ground rather than only the figure, to the structural transformation wrought by a medium rather than only its content, and to the pattern of effects a technology produces by virtue of its form.
This is presented not merely as an academic point but as a matter of practical and cultural urgency. In an age of accelerating technological change, the inability to perceive formal cause leaves societies perpetually surprised by the consequences of their own innovations, reacting to content while missing the deeper reorganization of experience that new media bring about. The recovery of formal cause is thus offered as a tool of awareness — a way of seeing the environments we create before they overtake us, consistent with McLuhan’s lifelong ambition to make the hidden ground of media visible so that human beings might respond to it with understanding rather than somnambulism.
Within the larger reception of McLuhan’s thought, Media and Formal Cause occupies a specialized place. It is not one of the landmark works that made his public reputation but rather a later, more philosophically explicit statement aimed at readers already interested in the theoretical foundations of his media analysis. Its significance lies in the way it foregrounds the Aristotelian and Scholastic underpinnings of McLuhan’s project, correcting the common impression that his work was merely impressionistic by locating it within a serious tradition of causal reasoning. For students of McLuhan, and for those tracing the intellectual sources of media ecology as a field, the book serves as a compact articulation of a principle that the McLuhans regarded as indispensable to the whole enterprise: that media act as formal causes, and that learning to think in terms of formal causation is the precondition for understanding the technological world.
