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Mind, Body, World- Foundations of Cognitive Science, 2013a

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the non-cognitive that does justice to the subject matter <strong>of</strong> cognitive psychology.<br />

(Adams & Aizawa, 2008, p. 11)<br />

A variety <strong>of</strong> other critiques can be found in various contributions to Robbins and<br />

Aydede’s (2009) Cambridge Handbook <strong>of</strong> Situated Cognition. Prinz made a pointed<br />

argument that the extended mind has nothing to contribute to the study <strong>of</strong> consciousness.<br />

Rupert noted how the notion <strong>of</strong> innateness poses numerous problems<br />

for the extended mind. Warneken and Tomasello examined cultural scaffolding, but<br />

they eventually adopted a position where these cultural tools have been internalized<br />

by agents. Finally, Bechtel presented a coherent argument from the philosophy <strong>of</strong><br />

biology that there is good reason for the skull to serve as the boundary between the<br />

world and the mind. Clearly, the degree to which extendedness is adopted by situated<br />

researchers is far from universal.<br />

In spite <strong>of</strong> the currently unresolved debate about the plausibility <strong>of</strong> the<br />

extended mind, the extended mind hypothesis is an idea that is growing in popularity<br />

in embodied cognitive science. Let us briefly turn to another implication that<br />

this hypothesis has for the practice <strong>of</strong> cognitive science.<br />

The extended mind hypothesis is frequently applied to single cognitive agents.<br />

However, this hypothesis also opens the door to co-operative or public cognition in<br />

which a group <strong>of</strong> agents are embedded in a shared environment (Hutchins, 1995).<br />

In this situation, more than one cognitive agent can manipulate the world that is<br />

being used to support the information processing <strong>of</strong> other group members.<br />

Hutchins (1995) provided one example <strong>of</strong> public cognition in his description<br />

<strong>of</strong> how a team <strong>of</strong> individuals is responsible for navigating a ship. He argued that<br />

“organized groups may have cognitive properties that differ from those <strong>of</strong> the individuals<br />

who constitute the group” (p. 228). For instance, in many cases it is very difficult<br />

to translate the heuristics used by a solo navigator into a procedure that can<br />

be implemented by a navigation team.<br />

Collective intelligence—also called swarm intelligence or co-operative computing—is<br />

also <strong>of</strong> growing importance in robotics. Entomologists used the concept<br />

<strong>of</strong> the superorganism (Wheeler, 1911) to explain how entire colonies could produce<br />

more complex results (such as elaborate nests) than one would predict from<br />

knowing the capabilities <strong>of</strong> individual colony members. Swarm intelligence is an<br />

interesting evolution <strong>of</strong> the idea <strong>of</strong> the superorganism; it involves a collective <strong>of</strong><br />

agents operating in a shared environment. Importantly, a swarm’s components are<br />

only involved in local interactions with each other, resulting in many advantages<br />

(Balch & Parker, 2002; Sharkey, 2006).<br />

For instance, a computing swarm is scalable—it may comprise varying numbers<br />

<strong>of</strong> agents, because the same control structure (i.e., local interactions) is used<br />

regardless <strong>of</strong> how many agents are in the swarm. For the same reason, a computing<br />

swarm is flexible: agents can be added or removed from the swarm without<br />

232 Chapter 5

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