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One Man’s Ceiling Is Another Man’s Floor
A number of our readers asked EPSScentral's opinion
of Donald Norman's latest article, Human-Centered
Design Considered Harmful (online version is at
this link and another version is available at
Interactions of the ACM (Interactions 12.4, July-Aug
2005, pp 14 - 19). In this article Norman appears
to take an about-face as he begins questioning the
wisdom of the human-centered design process inherent
in his own work and in that of usability
professionals. Salient comments:
- "If it is so critical to understand the
particular users of a product, then what happens
when a product is designed to be used by almost
anyone in the world? There are many designs that do
well for everyone. This is paradoxical...[and led me
to] ...re-examine common dogma."
- The automobile configuration is common
world-wide - and it works. Kitchens haven't changed
significantly in a century - and people "manage
quite well."
- Activity-centered design is the key - where an
activity is a "coordinated set of tasks."
- The historical record shows that people adapt to
good tools, not the other way around.
- Human-centered design can be harmful in many
contexts.
And the list goes on. My question is this: Is
Norman's point a view really a departure from what
he has advocated for years? Superficially it would
seem the case since he touts human-centered design
explicitly in his books and papers. But one must
look a bit more deeply into his works and words and
not be misled by the ever-present "human-centered"
label. Consider the following quote from the cited
article:
"Why are non-Human-Centered Designs so successful?
I believe there are two reasons, one the
activity-centered nature, and two the communication
of intentions from builders and designers.
Successful devices are those that fit gracefully
into the requirements of the underlying activity,
support them in a manner understandable to people.
Understand the activity, and the device is
understandable."
If we compare this to what Norman has to say about
the power of representation and the role of
distributed cognition in making us "smart" (e.g.,
from his 1993 book Things That Make Us Smart), I
would argue that there is much similarity - in spite
of the Human-Centered Design evangelism throughout
his work. As a matter of fact, it was Norman's inspiration
that motivated EPSScentral's Performance-Centered
Design (PCD) model, represented by the
diagram. What I noticed over the years was that
there are really three distinct disciplines
necessary to foster performance - which, in the new
language, might be called completing activities.
The three disciplines are (1) Process Improvement
(e.g., Quality, which we trace to Deming), (2) Human
(User)-Centered Design and (3) Knowledge Management
(including information, content and learning
management). In this context, PCD is a process that
fosters the proverbial clash of the titans (the
three disciplines). Whenever we take any one of
these disciplines as religion for design, the things
we produce typically fall short of achieving their
goals in significant ways. What distributed
cognition requires is an iterative process in which
activities (dynamic processes, not static,
individual tasks), human factors and
information/knowledge are represented, and how they
are represented is refined until the thing works.
The moment we wear one of the three hats to the
exclusion of the others, our products are doomed to
fail.
Examples? Early altimeter designs in aircraft met
the task need, but failed to address the whole
activity: They accurately displayed the altitude,
but humans could not interpret the readings fast
enough to avoid crashing. The process (activity) is
know your altitude and do not crash. Most
enterprise computer systems (human resources,
customer relationship management, financials)
require labor-intensive training on "navigation" and
business rules. Static tasks are represented, but
dynamic processes (activities) are not in any
explicit way. The response to this is usually lots
of information added to the environment
(context-sensitive help, wizards etc.) that mostly
make the problem worse. And the list goes on -
underscoring that it is not just the human dimension
that is at issue, but the representation of the
whole dynamic process (activity) and what
constitutes minimal knowledge to be successful.
In other words - to quote the brilliant work of Paul
Simon - "One Man's Ceiling Is Another Man's Floor."
We must diligently and responsibly represent
process/activity, human factors and
content/knowledge optimally for performance to
happen.
Further to this point, consider the following two
articles on the topic of New York City's Marriott
Marquis' elevator redesign: That
Sinking Feeling and Stupid
Marriott Marquis Elevators. In the first
article, we learn how brilliantly Schindler's
Miconic 10 Elevator solved the abysmal queuing
problem at the Marquis, where guests used to suffer
45 minute waits:
"...the Miconic 10 organizes passengers according to
their registered destinations. In other words, you
key in your destination before you get in, then
leave it to the elevator. There are no buttons
inside the elevator."
But immediately following implementation, Doc Seals
writes about his experience:
"...this ridiculous system with a central keypad
that you type your floor number in, that then tells
you which elevator will be coming to pick you up.
The elevator has no keypad, because it supposedly
knows where to go. Unless it doesn't, which you
can't tell, since there's no display, in which case
you are trapped into going to some random floor."
Again, “One Man’s Ceiling Is Another Man’s Floor.”
To Don Norman’s point, there are apparently a few
artifacts missing from the activity space of Miconic
10 that transcend human factors shortcomings. Yes,
Doc Seals needs more feedback. But the activity of
getting from point A to point B is dynamic. It is
not a static task. Whatever design insight made
Schindler dispense with conventional buttons and
displays is refreshing – but the implementation fell
short of the complete activity. For the entire
system (that would be human being, process and
information) much was omitted from the design beyond
the task of calling the elevator to the appointed floor.
As usual, I will continue to sing praises to Donald
Norman in spite of the apparent 180-reverse. He
inspired EPSScentral about twelve years ago in a way
that is completely consistent with this 2005
inspiration. We knew you’d get there, Dr. Norman.
Keep up the brilliant work!
Regards,

Gary Dickelman
PS Watch for Marc Rosenberg's latest book, Beyond
E-Learning. It represents the greatest
concentration of contemporary wisdom and experience
around e-learning to date - including his own and
that of the most seasoned professionals who truly
make performance happen. Beyond E-Learning will
therefore make better decision-makers of leaders
such as CEOs, CFOs and CTOs and, equally, will make
better managers and practitioners of those charged
with ensuring organizational performance through
human performance.
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