He narrated a hilarious joke to an assembly. They broke into laughter, reveling in the novelty of it.
He repeated the joke after 5 minutes. They smiled indulgently.
He repeated the joke after 10 minutes. Their lips curved up, their eyebrows slashed down.
He repeated the joke after 15 minutes. There was impatient shuffle.
He repeated the joke after 20 minutes. There was stony silence.
He repeated the joke after 25 minutes. Frank irritation sliced through the air.
He sensed the unrest and smiled, “A happy incident has the power to bring a smile. It loses that power on repetition.
Then why? Why? Why does a slight/an insult/a misfortune/a reversal not lose its power to make you gloomy in spite of repeatedly dwelling on it?”