_{This is Day 16 of the 30-day Traffic Koans contest. Details on how to enter can be found here: https://steemit.com/traffic-koans/@jedau/traffic-koans-halfway-update-1505319420-6600256}

It had been raining for three days, and the flood had already risen to the level of a person's knee.

A distraught man approached a wise man in hopes of solving the flood problem.

"Wise man," he called out. "Help us get rid of the flood."

"For that to be done, we must first find out what caused it."

"Okay. So, how do we do that?"

"I saw you yesterday eating a hamburger," the wise man replied. "Where did you throw the wrapper?"

"On the street. Why do you ask?"

"That bag of chips the other week, where did you throw it?"

"On the street! How is any of this relevant!?"

"I think we have found the cause and the solution."