Teaching Perspectives Inventory – Then and Now

Original Post: 2012.11.30

A quick review of my TPI indicates that what I believe and what I do are two different things. I don’t feel much conflict or hypocrisy about this, however, as I can very easily identify the reason behind this discrepancy: I teach English in Korea. That’s not meant to be dismissive or antagonistic toward Korea, it’s a statement of the culture I teach in, its expectations of how I should teach, and the content that is not much under my control. Korea still expects – and follows – a direct instruction paradigm, and within that there is a strong reliance on the Grammar Translation method of language instruction; two pedagogies that found their way to the archives of popular opinion in other countries years ago. Strother (2003) argues in East Asia teacher-centered pedagogies are culturally reinforced in China, Japan and Korea, but differ only in matter of degree. My experience here certainly echoes his findings.

Kim Hogg's TPI Results
I don’t do what I think I should do, but I know that.

Dominant: Nurturing

Back-up: Transmission, Apprenticeship, (Developmental)

Recessive: (Developmental), Social Reform

These results indicate that I am more concerned with my students’ self-confidence, and that’s true; that’s what I’m instructed to concern myself with. The primary purpose of my existence as a “native speaking instructor” in the classroom has little to do with any (perceived) expertise and more to do with making my students comfortable talking to a non-Korean in English without getting so embarrassed and shy that they collapse into a black hole of themselves. I wish I were exaggerating, but on most accounts this is true. Any opportunity I have to assist them in making gains in their abilities (which really are mostly under-practiced; any Korean students of English probably know more grammar rules than their native-speaking teachers), their social views, or other areas of their lives is pure icing on the teaching cake.

So if my job is merely to being a comforting figure that boosts her students’ confidence and helps them with a few errors along the way, why do I stay? What drives me into a graduate program that demands resources both financial and temporal when it’s not going to make a difference to my job requirements? Looking at my score, my stronger beliefs around Apprenticeship, or what Pratt and Collins (2001) refer to as the teacher-as-highly-skilled-practitioner role, I see my own desires to improve and become a better teacher.

My higher score in Transmission likely also assists in driving me forward. While it is not high on my Beliefs score, it is higher enough in Intentions and Actions to push it to second position in my results. The Transmission perspective also relies on an expert teacher, and that is also an expectation of my students. I have oft been told that in Korea, the teacher knows everything, the students are empty vessels and come to be filled. While I have my own personal disagreements with this philosophy of teaching, I need to find balance between how I view teaching should be, and how my students expect me to act. As such, the Nurturing perspective, which balances care and expectations, is a natural fit.

I also notice that my scores are not strongly opinionated; that is to say, I don’t display a strong set of convictions according to this profile. This may reflect the natural evolution of my teaching philosophy, one that has grown out of trials-by-fire, time in the classroom, and conversations with others navigating their way through the mire of possibly pedagogies without the aid, advantage or influence of formal, professional training. Indeed; I did not go to university planning to be a teacher, but it is what I do, and at the end of the day, I want to be good in my practice. And while I’m certainly after the credentials, it makes sense to me to develop my craft and work toward becoming better, to the best of my ability.

Retake: 2013.5.15

TPI Results May 15, 2013Dominant: Apprenticeship and Nurturing (38).

Backup: Development (32)

Borderline: Social Reform (31)

Recessive: Transmission (27)

Well, a few things have certainly changed, and probably reflects my changes in instruction methods and thoughts about how I’m going to teach vs. what is expected. In short, I’ve thrown a fair number of expectations to the wind and have gone with what feels right in my heart.

From left to right on the scale, my Transmission score has dropped from second to last place (-6 points), Apprenticeship (+8) is now tied with Nurturing (+3) for first place at 38, followed by Developmental (+5) and Social Reform (+7).

Looking again at the descriptions, I can see that the drop in Transmission is likely related to a shift from a teacher-centered model to an increasingly student-centered, constructivist model based (where possible) on problem-based activities. This is all while continuing to work in classes segregated by language skills (speaking, reading, listening, writing); an old set of divisions being replaced by the ACTFL delineations (interpretive, communicative, presentational). This drop in Transmission isn’t to suggest that mastery and careful pacing have become less of a concern. Quite the opposite, in fact.

A large part of what I’m doing (and learning), however, is reflected in the massive jump in Apprenticeship. This is highlighted as “socializing students into new behavioral norms and ways of working” (Summary of Five Perspectives, “Apprenticeship” section). The students, through both student-centered learning activities with a problem-based learning focus is absolutely a shift in behaviour and ways of working. Students and instructor are learning how to make this work. Another new implementation has been standards-based grading. In combination with rubrics now shared with the students, they are learning how to master language in stages, what it looks like, and exactly what they need to be working on to reach the next stage.

This is also reflected in the Nurturing score, where I want my students to understand success is possible, by the students themselves, and that we are all in the learning process together. Standards-based grading allows me to be sensitive to effort, nurturing students in exactly the right ways to bring them closer to achieving the goals for the program. My students know that it’s not about when they learn, but that they learn. We each learn differently and at different speeds, and as long as they show progress over the semester I’m happy.

Finally, for the backup, if Developmental is a measure of student-centeredness, this jump is obvious. I’ve switched from being primarily teacher-focused to intensely, intentionally focusing on how to make my classes more about my students (because I certainly know the material!). An upside of this shift has not only been for my students, but I think also for me as a person. The less I focus on me, what I want and how best to get there, and instead focus on empathy, I’m happier, and so is everyone else.

Re-test 2: 2013.12.3

Here are the results; I’ll have to post an analysis and commentary later.

Chart of TPI results. Details below.
Reverting to the first results

References:

Pratt, D., and Collins, J., (2001). Teaching Perspectives Inventory. Retrieved from http://www.teachingperspectives.com/html/tpi_frames.htm

Strother, J.B., (2003). Shaping blended learning pedagogy for East Asian learning styles. Professional Communication Conference, 2003. IPCC 2003. Proceedings. IEEE International, 21-24. doi: 10.1109/IPCC.2003.1245513  Retrieved from http://ieeexplore.ieee.org./stamp/stamp.jsp?tp=&arnumber=1245513&isnumber=27908

 

CN: Web-based Learning

Coultas, J., Luckin, R. & du Boulay, B. (2004). Is There Compelling Evidence for the Effectiveness of E-Learning in Higher Education?. In J. Nall & R. Robson (Eds.), Proceedings of World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education 2004 (pp. 1828-1834). Chesapeake, VA: AACE.

Abstract: Is there evidence for the effectiveness of e-Learning in the Higher Education sector? This paper offers an overview of theories of learning in instructional contexts and then lists some of the varied and diverse definitions of e-Learning. The question of the extent to which a learning philosophy is implicit (or even explicit) within each definition of e-Learning is raised. The development of a search strategy and the issues of inclusion and exclusion criteria in assessing the evidence for the effectiveness of eLearning are briefly described. A modified form of a systematic review is offered as a methodology suitable to locate and evaluate the evidence needed.

Key Questions:

  • Is learning in Higher Education different to the learning that occurs in compulsory education?
  • Is it useful to revisit theories of learning in instructional contexts?

 

Ed Theory and Technology

Introduction

For one of my courses I need to do some remedial reading on education theory. Since I didn’t do my undergrad in education, I don’t have the background of some of my classmates, and so I’m grateful for this package of information. I’m going to document my notes below.

Learning Objectives:

After completing this unit you should be able to:

  1. explain the difference between an archetype, a paradigm and a model;
  2. discuss the key characteristics of Davies’ three educational technologies;
  3. discuss the key principles of behaviourism, cognitivism and constructivism;
  4. explain the key differences between behaviourism, cognitivism and constructivism;
  5. discuss the difference between the objectivist and the subjectivist epistemologies;
  6. discuss the implications of behaviourism, cognitivism and constructivism on instructional design and development;
  7. explain the five perspectives on teaching; and
  8. appreciate the value of different approaches to teaching and learning.


Obj 1: Archetypes, Paradigms and Models

When first talking about technology, Davies (1978) discusses the differences between decisions, which are choices before an event “between a range of alternatives, none of which is probably more right than the other” (p. 10), whereas judgements take place after an event and are choices between “‘right’ and ‘wrong’; a choice between ‘good’ and ‘bad’ or ‘true’ and ‘false'” (p. 10). From this he goes on to note that when choosing a technology for use in education, one might start by making a choice but must at some point afterward make a judgement and evaluate these decisions for their worth.

Questions for Reflection

What is the difference between an archetype, a paradigm, and a model?

Archetype: “The viewpoint or perspective used by someone engaged in an act of inquiry” (Davies, 1978, p. 16). A framework or prototype useful for in-communication about the “myths, dreams and ritualised models of professional conduct” (p. 16). They are the framework on which the community is built. Can limit growth beyond the commonly-held ideas of what education or teaching is. Archetypes can serve multiple paradigms but often only serve one.

Paradigm:  The paradigm is a concept with more structure around a given idea or theory, including “definitions, statements and interrelationships between the statements” (Davies, 1978, p. 17). Diagrams are often used to explain the relationships between different aspects of a phenomena, revealing methodologies and suggest research questions for further study. The paradigm is more limited than a worldview, and is rarely a new idea, as an archetype may be. Educational technology paradigms may be recognised in two ways: 1) it is new enough to be appealing, drawing adherents away from other paradigms, and 2) is not yet fully formed, allowing for adherents to add to and refine the basic structure while bringing in yet more adherents (Davies).

Adherents to a specific paradigm share values and concerns, often working together with a common set of authoritative texts and a set of rituals (Davies, 1978). This paradigm is the glue that holds their work together in a common set. Davies laments that educational technology is (at the time of writing) greatly lacking breadth in its paradigms, with the variation that does exist lacking creativity in distinctions.

Pedagogies and curricula designs, while called “models,” are actually paradigms (Davies, 1978).

Paradigms are constructed to prove they are wrong, allowing it to be replaced with another paradigm that more accurately reflects reality (Davies, 1978).

Model: Usually at least partially quantitative, is more specific and detailed than a paradigm (Davies, 1978). The example Davies gives is that of a model car, in which the model can be used to determine the facts of reality on the basis of a certain scale. Another example given is that of a map, where distances on the map correspond to distances in reality. Davies attributes the rise of models as an authentic source of knowledge based on three factors: 1) manipulation of people and organizations is unethical/unlawful, 2) the costs of dealing with actual people is too high, given the increasing uncertainty that may breed errors, and 3) contemporary models are actually pretty good at representing reality, so confidence in their results has increased (Davies).

Models, unlike paradigms, are constructed to use in determining the solution to a particular problem (Davies, 1978). They are often problem-specific, and different models may present the same phenomenon from the perspectives of different paradigms. The strength of the model is the ability to use it to form hypotheses for testing.

Davies (1978) complains that few models in educational technology have been tested, and those that have lack reference to underlying theory. He says the research that has been performed is fragmented and disjointed in such a way that creating a framework for the future from the parts is a Sisyphean task.

 

Obj 2: What are the key characteristics of Davies’ three educational technologies?

The three educational technologies don’t have any particular names and thus are simply numbered sequentially.

Technology One (T1): Davies (1978) identifies this as being a hardware-driven approach to technology in which education problems are solved with methods common to the physical sciences and engineering. The assumptions are that the technology of the machines employed determines the quality of the output. T1 serves to increase efficiency in information transfer, especially as it relates to larger groups of students. The cost/benefit ratio is primarily financial.

Technology Two (T2): Davies (1978) sees this as a software-driven approach with a basis in behavioural science. The design of the message, rather than the medium, is key to efficient learning according to T2. Curriculum development revolves around “identifying appropriate aims, goals and objections; selecting relevant content and subject matter; choosing contrasting learning methodologies, activities and experiences so as to make for a worthwhile and rewarding course of study; and then evaluating not only the success of the resulting learning experience but also the effectiveness of the very development techniques employed” (Daves, p. 13).

Technology 3 (T3): This technology combines both the hardware and software approaches, rejecting systematic (mechanical) development in favour of systemic (organic) method (Davies, 1978). The focus is on both the process and the outcomes of teaching. Using systems analysis, the technology looks more at individuals as actors in a group rather than individuals independently. The environment (media/hardware) are as important as the message (software/content). Schools, including administration, teachers and students are all part of a symbiotic whole, and the system itself is either healthy or unwell.

As such, T1 sees solutions to problems in transmission-reception, T2 seeks to purposefully shape behaviour, while T3 takes a more integrated approach. It seeks to identify the best approach to a given problem through diagnosis and inquiry without prejudice as to the source of or solution. This inquiry, however, can have messy outcomes. Davies (1978) notes, “What at first might appear to be a nice, self-contained difficulty, can soon become a matter of complexity involving a greatly enlarged context” (p. 14). Davies believes that it is common sense to take a measured approach to change, even when it seems the entire system needs to be dismantled, suggesting that with T3, practitioners must put boundaries on their problem, deal with the primary or immediate problem without going overboard. This method is not efficient, but it may be (eventually?) effective.

Davies (1978) identifies “five skills of effectiveness” (p. 15) that form the foundation of the T3 approach:

  1. sensitivity, so that the needs of the total situation, both people and task, can be sensed
  2. diagnostic ability, so that the nature of the problem or difficulty can be identified and communicated
  3. decision making, so that appropriate actions can be selected from a wide range of possible alternatives
  4. flexibility, so that it is possible to implement whatever the situation demands or requires
  5. action skills, so that routine and mechanistic tasks of implementation can be efficiently carried out. (p. 15)

Davies cautions against biting off more than is possible to chew, respecting the time of both student and teacher in the interest of effort output for greatest return rather than busywork. This will not always be with consensus, but should consider dissenting opinions. 

 

What are the key characteristics of the audio-visual, the engineering and the problem-solving archetypes of educational technology?

When Davies (1978) was writing, he listed the engineering archtype as the most pervasive, in which associated paradigms had a bias toward objectivity as in the hard sciences. Davies quickly dismisses the pervasive assumption of his contemporaries that objectivity was thus the “only paradigm possible in educational technology, especially in the areas of curriculum, course and instructional development” (p. 19). He makes space for subjectivity, calling both it and objectivity assumptions. Much as in the case of light being both particles and waves, he comments that the very process of observation changes the observed, changing the phenomenon merely by observing it. Thus, objectivity is limited, as the mere act of making observations and analysis contaminates. The new archetype, based on problem-solving, employes lateral thinking over vertical. Davies argues that objectivity is devoid of ethical concerns, but this is critical to subjectivity as it draws upon behaviourism. He cautions against Dogmatism, as technologists still need to make judgements and decisions with the information they have, and implies that rigidity can lead to poor conclusions.

The characteristics of each archetype are as follows:

The Audio-Visual Archetype: This is the first of the three archetypes, initially developing in the 1930s and growing in popularity following the second world war (Davies, 1978). This archetype is based on the hardware used to deliver information “chunks;” an aid to presentations and teaching, increasing access to experiences not normally available, expanding the sphere of influence of teachers across geographic boundaries, enriching teaching and learning by integrating with both processes, and in assessment through computers or other machines, expediting the process.

The Engineering Archetype: With growing interest in programmed learning coming to the fore in the 1960s, the Engineering Archetype emerged with it (Davies, 1978). This was still prevalent contemporary with Davies’ article. B.F. Skinner’s influence was heavy on the archetype in which behaviourist technology was implemented on teaching an learning. This archetype is highly process-oriented, in which experiments are repeated with small variations to find optimal approaches to education delivery and reception. It reflects the pharmacological techniques of control and test populations. Davies criticizes this approach, as some technologists lose the forest for the trees, creating overly-complicated systems for analysis when the foundations upon which they are build rely on poor assumptions.

The Problem-Solving Archetype: Was beginning to emerge in the mid-1970s, and Davies (1978) saw it as more innovative, due in part to its relationship with the creative process.   As of the late 1970s, it was still in a growth stage. Comparing its approach to a chess game, Davies says this archetype requires intense concentration, ability to foresee consequences to several degrees of removal, flexibility, acquired skills and learning experiences. Activities should be developed out of a sense of dissatisfaction with the goal of resolving it as quickly as possible.

 

What archetype, paradigm and model of educational technology do you think most of your teaching would fall into?

I teach in a culture where I see (or believe I perceive) methodology sprung largely from the Audio-Visual Archetype, where, as Mark Twain might have said, “a professor’s lecture notes go straight to the students’ lecture notes, without passing through the brains of either.” These lectures rely heavily on powerpoint in a lecture hall with a microphone to amplify the professor’s voice. Students are variously sleeping, talking, texting, making trips into the hall, and yes, a few are cognizant of what is supposed to be happening in the space.

Dealing with these expectations from my students has created some difficulty as I attempt to work within the Problem-Solving Archetype. One might conclude that my foremost problem is primarily one of expectations! As far as the growth of my students in the content area is concerned, many of my colleagues view it as a happy accident when it occurs. This is, as one might imagine, a source of frustration but also of great opportunity. As a visible “other” in the classroom (I am of both a different nationality and ethnicity than my students in a largely homogeneous setting), my proverbial foot-in-the-door to change is my very otherness. From this I am able to create a space, however small, where things are different.

As for my paradigm, I haven’t set myself into any as of yet. The tabula rasa that I work with affords me many opportunities to test and experiment with pedagogy as I see fit. As of this year, some mandates have come in as to how the program will be taught (see the above comment on the Audio-Visual paradigm), but I do my best under it to carve out a space for my own approaches. I have no fear (perhaps to my folly!) of experimenting with new technologies, remixing existing technologies for a new purpose if it solves a pedagogical problem, such as smartphone-based chat groups with students for multi-directional communication (teacher to student, student to teacher and between students).  I am not sure that I will ever settle into a single paradigm. For me, it’s a matter of finding the best path for the moment and taking it.

I don’t have a model as Davies defined it; a scaled-down version of how things work. I’m not entirely sure how I would go about creating one. Perhaps the above problem of communication and its solution are an example of a model for my specific context.

Davies wrote his article in 1978, over 20 years ago. Is it still relevant to the thinking of using technology in teaching and learning, today? Why or why not?

Absolutely. A key problem that Davies (1978) is that education has not taken the opportunity to renew itself, which is a hallmark of organizations on the decline. “Instead of viewing educational technology as an opportunity for renewing educational practice, it has, too often, been conceived as a means of doing what has always been done — only more efficiently” (p. 12). As I mentioned in my comment about colleagues in other departments using paradigms from an archetype 90 years old, there is much relevance to these competing ideas.

The Problem-Solving Archetype, in concert with the T3 approach to technology seems to me to be the best possibility to finding successful solutions to educational problems. This is particularly true of the requirements of flexibility and foresight that come out of the Problem-Solving Archetype. As technologies expand and morph at ever-decreasing intervals, these two characteristics of the technologist will be (continue to be?) in high demand. Without these skills, an education technologist will be quickly left behind.

 

Obj 3.1: Behaviourism

The following information is derived from the online course notes,  “Theories of Learning: Behaviourism”

A psychological theory that emerged in the 1920s. Prior to Behaviorism, learning was considered an internal process and “introspection,” a process in which study participants were asked to reflect on their own thoughts, was used to investigate learning. Behaviourists thought this was bunk because there was no external way to measure it. For Behaviourists, learning happens when there is an observable change in behaviour. Everything internal is irrelevant as it cannot be measured or directly observed.

Behaviourism has a few key assumptions:

  • If you can’t directly observe or measure it, it doesn’t count. The things that count are stimuli on an organism and how it responds to that stimuli.
  • The mind can’t be studied. Stimuli can go in and responses can come out, but the process is unobservable and unmeasurable, and thus unknowable.
  • If behaviour hasn’t changed, learning hasn’t happened.

These assumptions affected education in that learning was believed to have happened if there was an observable change in behaviour. Thus, you teach in such a way as to see changes in how people behave. It’s the only way you can know they’re learning

The sorts of activities that resulted from this thinking included drills and similar practice activities. Programmed learning is the extreme version in which instruction is broken into chunks and sequenced. Programmed learning follows a pre-determined course and reinforces correct responses immediately.

Behaviourism has fallen out of favour as it is seen as overly mechanical and insensitive to human learning needs. There may be appropriate applications for some aspects of behaviourism, so caution is needed before dismissing the paradigm outright.

Questions for Reflection:

What are some of the ways in which the behaviourist principle of reinforcement has been applied to education?

  • drill exercises
  • practice activities (as in for multiplication tables, basic math priciples)

What are the roles of the teacher and the learner in the behaviourist framework?


What are some of the criticisms of behavioural objectives?

What epistemological tradition (objectivism or subjectivism) do you think underlies the behaviourist view of learning?


Can you think of anything you do as an instructor that is influenced by the behaviourist view of learning?

In what contexts do you think it would be appropriate to use a behaviourist approach to teaching?

In what contexts do you think it would be inappropriate to use a behaviourist approach to teaching?

 

 

References:

Davies, I.K. (1978). Educational Technology: Archetypes, Paradigms and Models. In J.H. Hartley & I.K. Davies (Eds.), Contributions to an Educational Technology, Volume 2. (pp. 9-24). New York: Kogan Page.

Thinking Computers and Education

This module’s question:

What is the trend among educators relative to beliefs in technology, culture and the power of computer assisted learning? As you respond to this consider the notions of construed reality, own cultural influences,  influences from cultures unfamiliar to you, and the view that computers will likely be able to achieve human like thinking ability. You might also scan the links below:

My Response: (Notes on individual sources follow)

What is the trend among educators relative to beliefs in technology, culture and the power of computer assisted learning?

I’m not sure that I can speak to a single trend beyond anecdotes. There seem to be several groups that dominate the discussion, from technophiles such as myself, to the guarded (not early adopters or technophiles, but willing to engage with guidance) to the resistant.

Within the ESL/EFL/ELL field, there are special interest groups related to CALL (Computer-assisted Language Learning) that goes back to the days of language labs and headsets for every user to practice simulated language use. I think most teachers are willing to engage with technology where there is evidence that it can improve outcomes for students. Resistance appears to come from educators generally uncomfortable with change or comfortable in their current ability to bring students to set outcomes.

 

Sites to Scan: These were identified to provide you with links to a variety of resources that contain trends, developments, perspectives, philosophies and other tid-bits of information.  As a collection it is disposed only as an incomplete base.  At best the links provide you with a starting point from which to view a host of ideas on the topic of this module.  Within the links you will find trends, collection of philosophical views, issues, position papers, chronicles, titles, training opportunities etcetc

This resource is no longer available.

Basic history of calculators from 1950s onward.

Network access assessment tool called “Checkmate” uses “neural networks” to determine the intent of a user’s access on a network and block out hackers as effectively as human network administrators. Sold commercially.

Sadly, this link points to the same article as above.
  • Harris, Mishra, and Koehler provide a small collections of views and philosophies on Teachers technological and pedagogical practices related to computer integration into learning: http://mra.onefireplace.org/Resources/Documents/TPCK%20Article.pdf (JRTE, 41(4), 393–416. Teachers’ Technological Pedagogical Content Knowledge and Learning Activity Types: Curriculum-based Technology Integration Reframed. Judith Harris, Punya Mishra and Matthew Koehler)

“TPACK encompasses understanding and communicating representations of concepts using technologies; pedagogical techniques that apply technologies appropriately to teach content in differen- tiated ways according to students’ learning needs; knowledge of what makes concepts difficult or easy to learn and how technology can help redress concep- tual challenges; knowledge of students’ prior content-related understanding and epistemological assumptions, along with related technological expertise or lack thereof; and knowledge of how technologies can be used to build on existing understanding to help students develop new epistemologies or strengthen old ones” (Harris, J., Mishra, P., Koehler, M., 2009).

This article reinforces the idea of how technology, content knowledge and pedagogy must work together (TPACK), and suggests how to plan to use all three in learning activities for students.

Basic jist is that teachers aren’t using technology to its fullest educational potential: “Researchers emphasize technology uses that support inquiry, collaboration, and reformed practice, whereas many teachers tend to focus on using presentation software, learner-friendly Web sites, and management tools to enhance existing practice” (p. 393).

Seems to be offline (2012.10.23)

Dense. My head hurts. I’ll have to reexamine this one later.
I have to completely agree with the introduction: The breathy adulation for the newest form of media through which we transmit information is not closer to the ideal “freedom of information” that some espouse – it’s merely appropriate for the context of the time it is tied to. While the written word, and its ability to transmit information over time and space was transformative, as was the newfound accessibility through the printing press, the radio, the TV and now the Internet, it is still constrained by the characteristics of the delivery system. While the accessibility is wide, the freedom of the press is still limited to the person who owns one. Without the tools of access and creation, the information may as well not exist at all.
In the summary of the paper to be presented by Blanchette, I noticed this quote: “while digital humanists may well benefit from engaging in “computational thinking,” I will argue the computing infrastructure implicitly performs much of that thinking, before a single line of application code is written” (“Infrastructural Thinking” as Core Computing Skill, para. 2). I could not help but be reminded of McLuhan’s “the medium is the message.”