Is Silicon Valley Diverse Enough to Resist Reduction?
This essay takes Joichi Ito’s manifesto for resisting reduction in AI as its point of departure, and asks, “Is Silicon Valley diverse enough to resist reduction in AI?”
Silicon Valley seems fascinated with the notion of ‘Singularity’, i.e. the moment in time when artificial intelligence (AI) becomes smarter than humans.
Numerous studies have established that good collaborative models, where the desired outcome is collective intelligence, are driven in part by cognitive diversity. That is, the members of the system must not only be skilled, they must understand and solve problems differently than one another, in order to obtain a system of collective intelligence. Ito argues that Silicon Valley mega companies “… are developed and run in great part by people who believe in a new religion, Singularity”. Put differently, Silicon Valley seems to have homogenous notions of how to approach AI. Therefore, I argue that there is a lack of cognitive diversity among the people running Silicon Valley mega companies, and consequently, the main barrier to resisting reduction is in place. The lack of cognitive diversity results in suboptimal collective intelligence in the system, which helps explain the trend of reductionism. Ito alludes to this notion by cautioning that “In Silicon Valley, the combination of groupthink and financial success of this cult of technology has created a positive feedback system that has very little capacity for regulating through negative feedback.” Thus, they lack cognitive diversity to obtain collective intelligence. By formalizing this argument using Scott E. Page’s ‘Diversity prediction theorem’,
This essay will outline different interpretations of growth that together present a diversity of models on how AI may unfold. Second, I explain how a lack of cognitive diversity is related to herd behavior – and how that may have implications for the system. One of the essential implications of the subsequent reductionism is explicated by drawing on Page’s diversity prediction theorem. Finally, I tie together the arguments to show how cognitive diversity and the resistance to reductionism are two sides of the same coin – and I emphasize that, collectively, wise decisions on AI can only be assumed if the system building it comprises a cognitively diverse set of individuals.
Different Interpretations of Growth
As Ito noted,
One way to resist systemic reduction of the conceptualization of a given phenomenon is to challenge the underlying tenets of the paradigmatic beliefs of the community. Put differently, networked intelligence is, in part, determined by the exploration of new ideas.
Systematically reviewing some of the most common conceptual trajectories can explicate the need for conceptual diversity – and the potential blind spots of the church of Singularity. The following will go through the models of the exponential curve, S curve and hype curve (see the figure below for an overview).
The exponential curve: The central tenet of a Singularitarian view of AI is the assumption of an exponential curve of technological advancement. This perspective presumes that growth happens exponentially, and therefore, what may initially be perceived as a small and insignificant development will suddenly ‘explode’ in virulent outcomes due to positive feedback mechanisms. The prime example in technological cycles is Moore’s law, that is, the observation and subsequent prediction that the number of components per integrated circuit doubles every year.
The S curve: The concept of an S curve is widely adopted among academics and practitioners, but it has similarly been utilized inconsistently, as it has been applied to explain both technological progress as well as market share. When referring to technological progress, the notion of an S curve is very closely related to the concept of ‘diffusion of technological innovation’, where the S curve can describe the technological advancement – and the diffusion of innovation describes the demand for the technology.
The hype curve: The hype curve does not explicitly emphasize technological advances, but rather, the accompanying ‘hype’ of stakeholders (building on Gartner’s hype cycle).
Looking at a new technological development through the various curves is useful, as (1) it provides a comprehensive overview, (2) it reduces the risk of blind spots, and (3) it can point toward the most likely outcome. Such an analysis has previously been utilized on blockchain and bitcoin.
Cognitive Diversity vs. Herd Behavior
A potential consequence of a monolithic view in favor of exponential growth is that it blinds alternative explanations and predictions. In the above example, two models provide alternative trajectories that highlight some of the barriers to growth. These barriers remain absent in the exponential growth model. Hence, decision makers, developers, and entrepreneurs that do not consider all of the different development trajectories, at least to some extent, may very well be taking a reductionist stance on the issue of AI development.
A reductionist tendency, caused by a lack of cognitive diversity, can have three important implications:
it can lead to counterfactual interpretations
it can lead to overconfidence and optimism bias when predicting the future of AI, and
it can result in the oversight of potential barriers to development and growth. Of course, these issues are somewhat related: point 2 can be symptomatic of point 1.
However, in order to fully explicate my argument, the implications are untangled into these three distinct issues. These issues will be further unfolded in the following.
The first problem with a lack of cognitive diversity, and the resultant reductionism, is that it can result in counterfactual interpretations of ongoing developments in the marketplace and technological environment. Ito similarly alludes to the counterfactual interpretations that may arise when a single mental model (i.e. singularity and the exponential curve) dominate:
“Whether you are on an S-curve or a bell curve, the beginning of the slope looks a lot like an exponential curve […] Most people outside the Singularity bubble believe in S-curves, namely that nature adapts and self-regulates and that even pandemics will run their course.”
Two aspects are interesting in this description. First, it explains how Singularitarians may (wrongly) interpret early signals arising from the technological development as evidence of an exponential curve, although they may in reality be on an S-curve or bell curve. In other words, as the beginning of the slope is similar in all of the previously discussed curves, having a monolithic mental model of exponential curves may lead to oversimplified interpretations of data and flawed conclusions about reality. Second, it explains how the mental model of the exponential curve exists within a so-called ‘Singularity bubble’, although outside observers may believe in alternate explanations such as S-curves. Consequently, it illustrates the problem of a lack of cognitive diversity caused by isolated networks and echo chambers.
The second problem with a lack of cognitive diversity, and the resultant reductionism, is that it can lead to overconfidence and optimism bias when predicting the future of AI. As discussed under the previous point, it can be argued that Silicon Valley puts too much emphasis on exponential growth, which results in a Singularity bubble that filters out alternative explanations, and therefore, becomes symptomatic of a lack of cognitive diversity. A lack of cognitive diversity can lead to flawed decisions and systemic bias. That is, a reliance on a mental model favoring exponential growth may result in overconfident forecasts of technological growth and demand, leading to an optimism bias — particularly if they do not interpret data and early signals with alternative models. The present argument can be formalized mathematically through Page’s diversity prediction theorem. In Page’s work on the benefits of cognitive diversity, he untangles the elements that comprise the accuracy of collective forecasts (also referred to as ‘the wisdom of crowds’). As the concept of Singularity (and its underlying presumptions of exponential growth) is essentially a collective forecast of how AI will develop, it will be relevant to apply the lenses of the diversity prediction theorem to see what it has to say about this collective forecast. The basic explanation of the theorem is as follows:
Collective error = Average individual error – Prediction diversity
Now, what does this theorem actually mean? It means that if we want to build a group of forecasters (say, technologists from Silicon Valley who should forecast the development of AI), then their collective accuracy in making group predictions (as measured by ‘collective error’) depends on how much the group members know about the subject (as measured by the ‘average individual error’) as well as how differently they interpret the issue and the resultant forecast differences among the group members (as measured by ‘prediction diversity’). Put differently, a group that makes accurate collective forecasts depends on its group members being accurate (because they know about the topic they predict about) as well as differences between the forecasts of its group members (they vary in predictions because they each have a different interpretive model). The theorem similarly states that individual ability and diversity in predictions are equally important for the collective accuracy of the group. Hence, cognitive diversity matters just as much as ability. Albeit the members of the AI community in Silicon Valley are undoubtedly skilled at a level that is arguably almost impossible to match, it is reasonable to believe that their Achilles’ heel may lie in their lack of cognitive diversity, at least if it is judged by the overreliance on exponential models and a belief in Singularity. If we were to apply the diversity prediction theorem on Silicon Valley’s predictions of AI, it could be justified that the reliance upon assumptions of exponential growth could lead to overconfidence in the form of an optimism bias. That is, a systemic error in favor of beliefs of the growth trajectories of AI advances. Compared to the other potential curves represented in table 1, the exponential curve by far has the most optimistic and dramatic outlook on the evolution of AI. Whereas a more ‘collectively intelligent’ system would take a more nuanced outlook that incorporates forecasts from all three curves, arguably conveying a more pessimistic moderation of the future where, at best, progress will be slower and on a much smaller scale. Such a system would value skilled engineers and computer scientists but balance their perspectives with varied viewpoints from outside the conventional silos that dominate areas such as academia, autonomous vehicles, and AI.
The third problem with a lack of cognitive diversity, and the resultant reductionism, is that it can overlook potential barriers to development and growth. A direct outcome of the previous points is that reductionist approaches to AI may result in oversimplified understandings of technological development. If a single model of development is presumed, and that model constitutes the most optimistic outlier among the prevalent models, then potential barriers are not taken into account by the system that relies upon such a model. The subsequent result is herd behavior – that is, companies and individuals that reinforce their beliefs and take the systemic conformity as evidence for the validity of the direction. Over the long term results will be disappointing as inflated expectations are not met. Such a systematic failure has been seen during both the dot com bubble and the financial crisis of 2008. Herd behavior in favor of the most optimistic model overlooks realistic barriers inherent in the other models, namely two: technological barriers and demand barriers. Technological barriers are relevant to consider when focusing on exponential growth, as the exemplar of exponential advances in technology, Moore’s law, has recently been declared dead due to technological limitations.
As shown above, the reductionist tendencies, caused by a lack of cognitive diversity among Silicon Valley mega companies’ conceptualization of AI development, can have three important implications: (1) it can lead to counterfactual interpretations, (2) it can lead to overconfidence and optimism bias when predicting the future of AI, and (3) it can result in the oversight of potential barriers to development and growth. When combined, these implications comprise an unfortunate intellectual environment within which AI is being developed and commercialized. Put differently, the lack of cognitive diversity –resulting in conceptual reductionism – constitutes a form of herd behavior, known from financial bubbles and collective or functional stupidity.
Cognitive diversity = resisting reduction
When a system discourages active reflection and challenging the underlying assumptions that drive the system’s behavior, the outcome will necessarily be reductionism, and reductionism can result in the mindless behavior that characterizes “functionally stupid” systems.
Although it has previously been emphasized that one way to improve AI in Silicon Valley is to diversify the people who build it,
The bottom line is that having a system that comprises cognitive diversity among its members will secure the needed resistance to reduction, as alternative perspectives will continuously be considered.