End User Support:Programming
Manuals
(1998) book, The Invisible Computer , a
So it all comes back to figuring out
lot of the time all they've done is put a
how to develop programs that make
Around the same time as Norman's
pretty face on complexity and diffi
things clear for what may be a dispa
book was published, John Carroll, then
culty. If anything, what's happened is
rate group of users with different
an HCI specialist working at IBM's
that the prettier interface has allowed
needs. In the real world, such issues are
Watson research lab, experimented
manufacturers to make programs
often dealt with by redundancy that
with designing manuals for new users.
more difficult without alarming peo
is, expressing the same information in
You do not, he argued, need to read a
ple as much. This is why we now have
multiple ways.
manual in order to play a computer
to live with animated paperclips.
Consider the signs that tell pedestri
game, even though the game may be
ans when it's safe for them to cross the
extremely complex. Why shouldn't it
Speech
street. These use colour, position,
be possible to design business software
blinking and sound to convey the same
to be as easy to grapple with as a game?
Just as in 1990, when graphical in
simple message. For most people, red
After all, no matter how complex the
terfaces were supposed to be the solu
culturally means stop and green
game is, the instructions typically take
tion to it all, this year the solution to
means go, but colour blind individuals
up only a screen or two of large text,
making computers more human seems
can still get their cues from the blinking
and most players figure things out as
to be speech technology. If, the think
and positioning, and visually im
they go along with little trouble. Even
ing seems to go, computers can under
paired people hear the sounds.
the cheat sheet for a game as compli
stand and synthesise natural speech,
Cues in computer interfaces tend to
cated as Quake only takes up a couple
they will become more human. Some
be more subtle and, worse for new
of pages. Accordingly, in a time when
speech products have seemed to prom
comers, tend to rely on the user's fa
software was accompanied by massive
ise this, such as Lernout and Hauspie's
miliarity with computer culture as it's
manuals, Carroll experimented with
software that integrates into Microsoft
developed over the last two decades.
developing a series of no more than 20
Office. This package lets you tell the
Examples might be the change of the
cards that would hold all the informa
software what you want it to do (such
shape of the cursor in a DTP program
tion a user needed to get started.
as make this paragraph bold ) with
when you switch from layout (arrow)
Games were also the focus of an
out having to know where in the soft
to text editing (I beam) or on a Web site
essay by designer Chris Crawford,
ware's menu system the options are.
to indicate a live link as opposed to an
published in Brenda Laurel's 1990
But it's equally possible that what
underlined piece of text. Drawing on
book The Art of Human Computer In
speech will give us is many more rigid,
the traffic light example, it's possible to
terface Design . Games, Crawford ar
voice automated menu systems. The
think of ways to use multimedia to
gued, are the toughest interfaces to
same applies to virtual reality, also
enhance those cues. Error messages
invent, as users feel free to stop playing
proposed as a way to make the experi
signalled with both sound and an on
the game if they don't like it. Many
ence of using a computer more life
screen sign already do that.
innovations such as scrolling win
like. Do you really want to have to do
As a side note, sometimes ease of
dows, joysticks, trackballs and point
the on screen equivalent of pawing
use depends on having the right equip
and click interfaces had their first
through a six foot file of papers to find
ment for a job or writing for the equip
showing in games software long be
a document?
ment the user will have available. Your
fore the Mac.
A similar problem is beginning to
new Web site may look wonderful
Users need the computer to re
arise with the next big thing that's sup
when the designer shows it off to you
spond instantly whether they're play
posed to solve all our problems,
on a 26 inch monitor over a T1 line, but
ing games or writing a letter; sound
namely agents, and a real split is open
take another look over your own dial
cues are more problematic, since they
ing up in some circles about whether
up 14,400 bps connection on a 14 inch
can be used to give hints in games
the future of software should be intel
monitor (still the most common setup
where they might simply be annoying
ligent agents that do research and ne
out there).
in office software (the only thing worse
gotiate scheduling on our behalf, or
Understanding the audience and its
than an animated paperclip would be
whether we're better off with small
constraints is a mainstay of every other
a talking animated paperclip).
scraps of unintelligent software that
industry: lack of space in the typical
behave predictably.
home is why British refrigerators are
Improvements
Things have improved somewhat
since these researchers did their early
The computer industry has a unique
work, even though poor design costs
the computer industry large sums of
ability to ignore everything that anyone
money in technical support calls and
customer ill will. Graphical interfaces
else has ever invented and start from scratch.
have made some things easier but, as
Norman points out in his most recent
File: E0525.2
Update 121 (November 1998) page 20
PC Support Advisor
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