
January 2019 | ISE Magazine 41
Science fiction writers say the businesses of the
future will be run by self-aware robots. After
all, these devices can make intelligent decisions
unclouded by fear or other emotions. They will
work 24/7 without the need for pay, break time,
unionizing or vacation. Such an enterprise would
outperform the fallible human competition – at least un-
til the last act of the story, when the robots inevitably go
rogue.
While last-minute twists are critical to an entertaining
plot, more sober researchers in the artificial intelligence
field explain that we are far from achieving the general
intelligence needed for a robot-run enterprise to become
reality. So the question then becomes: How do we extract
the greatest performance out of what we know today is pos-
sible with man and machine? The starting point must be to
distinguish the strengths and weaknesses of each.
The limits of human understanding
Based on the number of neurons and connections in the hu-
man brain, Northwestern University psychology professor
Paul Reber, Ph.D., estimates we have a memory capacity
roughly equivalent to 2.5 petabytes of storage, though di-
rect comparisons are obviously difficult. Whatever the exact
figure, human memory is finite, though one can always add
more storage arrays to ensure a machine will never “forget.”
Mankind, on the other hand, can perform some impres-
sive mental feats. Two millennia ago, bards would travel
from village to village to recite works like Homer’s Iliad
from memory. It might take a few evenings to get through
the entire 15,693-line epic poem that was passed around for
generations by word-of-mouth long before books and wide-
spread literacy were common.
Multinight campfire readings have gone out of style, so
a more modern bard might resemble Rajveer Meena, who
in 10 hours can recite pi to 70,000 digits. Other exemplars
of human processing ability include Scott Flansburg, who
took just 15 seconds to add a randomly selected two-digit
number to itself over and over 36 times, and Vikas Sharma,
who calculated 15 large number roots in one minute. These
demonstrations, recognized by Guinness World Records as the
height of human ability, are trivial compared to machines
able to calculate pi to 22 trillion digits.
While the most talented human can’t come close to compet-
ing against machines in arithmetic and memory, don’t take the
logical leap to conclude that machines are better at reasoning.
The simplest questions asked of a child can trip up a computer.
This is evident to anyone who has used the amazing tools of
text recognition, live translation and voice recognition. The
increasingly ubiquitous digital assistants are as deeply frustrat-
ing as they are impressive, with quite a way to go before they
can be considered replacements for humans.
The reason for this is straightforward. The assistants rely
upon preprogrammed responses and Wikipedia entries to
generate answers to expected questions. This makes them
more like digital parrots with a large vocabulary than intel-
ligent AI systems with a grasp of language and nuance. To say
they lack critical thinking abilities is not to deny their useful-
ness. Rather, it is a recognition of the inherent limits of the
underlying technology used in these machines.
Similarly, most children can walk before they reach the
age of 2, but only the most highly engineered robots are able
to walk on complex terrain without falling over. YouTube is
filled with videos documenting these less successful efforts.
Humans excel at judgment and creativity. We can take
ideas, mix them together and think outside the box to create
works that are truly new. Constrained by logic, machines
cannot come up with responses that aren’t preprogrammed.
Everything they do is, by definition, programmed. They can
only simulate spontaneity; even random number generation
must be faked.
Sure, AI has made art, movies, poetry and music. Those
are works of art in the same sense as the canvas painted by an
elephant trained to wield a brush as seen at www.elephantart.
com, or the “selfie” taken by a monkey that presses the remote
trigger for a tripod-mounted camera. The AI creates what
passes for art by sampling a range of different examples of
paintings, movies, poems and songs. It uses learning algo-
rithms to extract the various elements common to each, then
generates and recombines those elements in a “new” way us-
ing pseudo-random number generation.
This output has the appearance of creativity without the
inspiration. There is no emotional connection to the subject
matter any more than there is an understanding of the mean-
ing of the brush strokes or musical notes.
Where the machines fall short, humans excel. Likewise,
the qualities humans most lack can be supplemented by ma-
chines. The intelligent enterprise recognizes this and pairs
the most powerful aspects of machines – analysis and mem-
ory – with the most powerful aspect of humans – judgment
and creativity.
Digging deeper into how it works
Judgment and creativity aren’t the province of machines
because causal reasoning is not easily reduced to mathemat-
ical calculation. As the work of UCLA computer scientist
Judea Pearl has shown, mining statistics and then applying a
few calculations to a data set cannot come close to creating
an AI capable of matching wits with a human. Causal infer-
ence is the essential ingredient for achieving human-level
intelligence. Otherwise you just have systems that mimic
human speech patterns like a digital parrot unable to un-
derstand the words being said.
Pearl has done a masterful job outlining the mathemati-
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