Writer's Digest (May/June 2009), claims that details are what make people "believe the unbelievable . . . that belief and reader absorption come in the details: an overturned tricycle in the gutter of an abandoned neighborhood can stand for everything. Or a broken billboard. Or weeds growing in the cracks of a library's steps" (50).
In "Why We Crave Horror Movies," originally published in Playboy in 1981, King details good and bad behavior, saying, "When, as children, we hug our rotten little puke of a sister and give her a kiss, all the aunts and uncles smile and twit and cry, 'Isn't he the sweetest little thing?' Such coveted treats as chocolate covered graham crackers often follow. But if we deliberately slam the rotten little puke of a sister's fingers in the door, sanctions follow--angry remonstrance from parents, aunts, and uncles; instead of a chocolate covered graham cracker, a spanking" (RC,WW 381).
Like King's description of the effects of good and bad behavior, write a detailed example of your subject with enough texture, imagination, and particulars for readers to believe and fully understand.