by William Butler Yeats (1865-1939)

Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere anarchy is loosed upon the world,
The blood-dimmed tide is loosed, and everywhere
The ceremony of innocence is drowned;
The best lack all conviction, while the worst
Are full of passionate intensity.

Surely some revelation is at hand;
Surely the Second Coming is at hand.
The Second Coming! Hardly are those words out
When a vast image out of Spiritus Mundi
Troubles my sight: a waste of desert sand;
A shape with lion body and the head of a man,
A gaze blank and pitiless as the sun,
Is moving its slow thighs, while all about it
Wind shadows of the indignant desert birds.
The darkness drops again but now I know
That twenty centuries of stony sleep
Were vexed to nightmare by a rocking cradle,
And what rough beast, its hour come round at last,
Slouches towards Bethlehem to be born?

Interesting that this was written soon after the first World War had ended. I am tempted to research and see if I can find evidence of bias towards those who show a lack of conviction — ones who look before leaping.

The most famous line here “The best lack all conviction, while the worst are full of passionate intensity” is cited in a personal appeal by Jimmy Wales, Wikipedia’s founder, on the Dunning-Kruger effect.

The unskilled therefore suffer from illusory superiority, rating their own ability as above average, much higher than it actually is, while the highly skilled underrate their abilities, suffering from illusory inferiority. This leads to the situation in which less competent people rate their own ability higher than more competent people.

No conclusion is provided by Wales other than what the research shows on its own. He brings up various types and forms of bias but leaves out the role of historical events such as World War I.