I’ve only noted one science article of any interest this month. Perhaps the financial crisis is taking its toll on scientific research as well? This one is from The Economist and covers how social animals make collective decisions. One study by Christian List of the London School of Economics and Larissa Conradt of the University of Sussex examined how bees choose a site to migrate to and start a new nest. As described, scouts are sent out to find suitable locations and when they get back they perform the bees’ infamous waggle dance to tell the rest of the hive what they’ve found out. The longer the dance goes on, the better the site. The entire hive needs to sort out which site is the best one and make a collective decision to move the queen and the worker bees to it.
The scientists found that the hive manages to make extremely reliable decisions even though there are only minor differences in quality between the sites. In order to find out how they did this, they created a computer model to simulate the results from different variables. They found that two aspects of their decision-making process were crucial towards correctly determining the best course of action: one, freely sharing information between the scouts and the rest of the hive and two, the independence of other bees to confirm the scouts’ findings by following their routes, checking out the site for themselves and then confirming the results to the rest of the hive by performing waggle dances of their own.
The implications for human behavior are obvious, though I think that the attempt by The Economist to link this to the theories of the 18th-century philosopher Nicolas de Condorcet, who believed that decisions taken collectively by a large group of people are more likely than those taken by a select few, is a bit of a stretch.


