by Mathew Maavak, Activist Post:
With new alarming predictions being made every week, it is important to explore the limitations of AI. The human brain provides the best reference point.
The global infoscape is currently abuzz with alarmist predictions over the dangers posed by artificial intelligence (AI). Billionaire entrepreneurs and their hirelings, who had once gushed over the emerging AI “technopia”, have suddenly turned apocalyptic. As the narrative du jour goes, a sentient AI may ultimately turn against its creators.
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But are there any merits to this claim, apart from fictional cues from the Terminator franchise?
One way to answer that question would be to compare AI to an analogue that is already available and sentient, namely – the human brain. AI was designed not only to mimic the human mind but also to out-compute it in certain aspects. Apart from presenting a paradigm shift, AI’s utility is not entirely revolutionary. Rather, it is a continuation of innovations past and present – wheels, cranks, and windmills to surmount our limbic limitations; bows, arrows and missiles to counter remote threats; and the Internet to resolve space-time constraints in (global) communications.
According to a notable article in the Foglets, “it is postulated that the human brain operates at 1 exaFLOP, which is equivalent to a billion calculations per second”. Mind you, this is just a postulation – a guesstimate likely defined by computing metrics. At the time of writing, Frontier, the world’s fastest supercomputer, reportedly operates at a speed of 1.102 exaFLOP. The difference between the brain and the supercomputer, however, lies in nature and function: one thinks while the other analyses data.
We have invented supercomputers to crunch numbers, but our scientists remain baffled by the neural processing prowess of human calculators. Shakuntala Devi, who grew up in a circus environment, was one prime example. Our sophisticated machine-mediated models still cannot fully comprehend how these brains work, beyond the fact that there is an atypical increase in blood flow to particular cerebral lobes when computational tasks are performed. The rest is a plane of scattered studies, suppositions, and data that have yet to be reconciled into a comprehensible whole.
There are too many unknowns with regards to the human brain. This may be the reason why the scientific community casually divides its major functions into eight or 12 primary categories. Where sentience lies within these categories remains an open question. Maybe, it is the result of cumulative interactions between all of them. Or maybe, humans have a sentient soul that makes them innovate in a way inaccessible to other species? Maybe, unlike AI devices and algorithms, the brain is software and hardware rolled into one? Too much uncertainty remains.
If neuroscience is an inchoate field riddled with myriad questions and gaps, what of its simpler subset – artificial intelligence? Can an embryonic technology invented by humans suddenly spring to life and threaten mankind? If we cannot fully understand how the human brain works or even define sentience, why are we cutting and pasting plots from sci-fi flicks onto our reality?
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There is a hypothetical chance that artificial intelligence does pose a real threat within a narrow spectrum. Poor software designs, rushed developmental processes and mismatched updates to algorithms, among others, can lead to various disaster scenarios. Those involve incidents at chemical or nuclear plants, on the stock market, or with experimental self-driving vehicles. But the prospect of an ominous, sentient AI is an imaginary proposition altogether.
The current fad in AI alarmism may actually be rooted in something more venal and down-to-earth. For it may not be machines that will ultimately revolt against its masters, but rather the hundreds of millions of workers – perhaps billions – who will be displaced by AI before this decade is out. This topic deserves a dedicated commentary on its own, and the human brain provides a reality check to the supposed existential threats posed by AI.
Wonders of the human brain
The nm.org resource provides the following snippet on our thinking organ and its processing capabilities: A fragment of brain tissue the size of a grain of sand contains 100,000 neurons and 1 billion synapses. The brain can generate about 23 watts of power – enough to power a light bulb. Information travels up to an impressive 268 miles per hour, while its storage capacity is considered virtually unlimited. Research suggests the human brain consists of about 86 billion neurons. Each neuron forms connections to other neurons, which could add up to 1 quadrillion (1,000 trillion) connections.
No wonder the Psalmist exulted in the fact that he was “fearfully and wonderfully made” in “his mother’s womb”. At any one second, the brain coordinates a bewildering variety of functions within itself and the human body in order to maintain organic harmony. It also rapidly compensates any deviation from the norm within the body in the event of a disruption i.e. shifting balance to one leg after another is impaired or activating hemostasis upon bleeding. The human body is therefore the ultimate complex adaptive system (CAS).
