Tuesday, June 27, 2006

A Failure of Collaboration

Little Red Hen found a grain of wheat.

"Who will plant this?" she asked.

"Not I," said the cat.

"Not I," said the goose.

"Not I," said the rat.

"Then I will," said Little Red Hen.

So she buried the wheat in the ground. After a while it grew up yellow and ripe.

"The wheat is ripe now," said Little Red Hen. "Who will cut and thresh it?"

"Not I," said the cat.

"Not I," said the goose.

"Not I," said the rat.

"Then I will," said Little Red Hen.

So she cut it with her bill and threshed it with her wings.

Then she asked, "Who will take this wheat to the mill?"

"Not I," said the cat.

"Not I," said the goose.

"Not I," said the rat.

"Then I will," said Little Red Hen.

So she took the wheat to the mill, where it was ground.

Then she carried the flour home.

"Who will make me some bread from this flour?" she asked.

"Not I," said the cat.

"Not I," said the goose.

"Not I," said the rat.

"Then I will," said Little Red Hen.

So she made and baked the bread.

Then she said, "Now we shall see who will eat this bread."

"We will," said cat, goose, and rat.

"I am quite sure you would," said Little Red Hen, "if you could get it."

Then she called her chicks, and they ate up all the bread.

There was none left at all for the cat, or the goose, or the rat.

http://www.ongoing-tales.com/SERIALS/oldtime/FAIRYTALES/littleredhen.html

Tuesday, June 20, 2006

Wisdom of Crowds

From Publishers Weekly
While our culture generally trusts experts and distrusts the wisdom of the masses, New Yorker business columnist Surowiecki argues that "under the right circumstances, groups are remarkably intelligent, and are often smarter than the smartest people in them." To support this almost counterintuitive proposition, Surowiecki explores problems involving cognition (we're all trying to identify a correct answer), coordination (we need to synchronize our individual activities with others) and cooperation (we have to act together despite our self-interest). His rubric, then, covers a range of problems, including driving in traffic, competing on TV game shows, maximizing stock market performance, voting for political candidates, navigating busy sidewalks, tracking SARS and designing Internet search engines like Google. If four basic conditions are met, a crowd's "collective intelligence" will produce better outcomes than a small group of experts, Surowiecki says, even if members of the crowd don't know all the facts or choose, individually, to act irrationally. "Wise crowds" need (1) diversity of opinion; (2) independence of members from one another; (3) decentralization; and (4) a good method for aggregating opinions. The diversity brings in different information; independence keeps people from being swayed by a single opinion leader; people's errors balance each other out; and including all opinions guarantees that the results are "smarter" than if a single expert had been in charge. Surowiecki's style is pleasantly informal, a tactical disguise for what might otherwise be rather dense material. He offers a great introduction to applied behavioral economics and game theory.