[psychology] the art of quick chicken sexing in iraq

It’s twilight and you’re on guard duty in a war zone, say in Iraq. A group of twenty men approach from the distance, wishing to parley and they appear friendly. Suddenly, your captain opens fire and you follow suit and later, it appears the captain was correct and it was the enemy after all. How could he have known that? Richard Horsey posits, in his tome, that chicken sexing follows the same procedure, in quickly and reliably determining the sex of day-old chicks. And the Japanese are the masters at it. More here.