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"The way animals make collective decisions can be complex... how the insects mitigate the disadvantages of making a swift choice. If the ants’ existing nest becomes threatened, the insects send out scouts to seek a new one. How quickly they accomplish this transfer depends not only on how soon the ants agree on the best available site but also on how quickly they can migrate there. When a suitable place is identified, the scouts begin to lead other scouts, which had remained behind to guard the old nest, to the new site. The problem is that if the decision is reached rapidly, as it might have to be in an emergency, then relatively few scouts know the route. It would then take much longer to ... "Dr Franks and his colleagues identified a type of behaviour called “reverse tandem runs” that makes the process more efficient. During the carrying phase of migration, the scouts lead other scouts back along the quickest route to the old nest so that more scouts become familiar with the route. Thus the dynamics of collective decision-making are closely entwined with the implementation of these decisions. How this might pertain to choices that people might make is, as yet, unclear. But it does indicate the importance of recruiting active leaders to a cause because, as the ants and bees have discovered, the most important thing about collective decision-making is to get others to follow." |
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