In science, one can experience the law of unintended causes for a number of reasons. In the Philippines, there were rice terraces that became developed, and then were destroyed, with many events that were formulated with the results of unintended consequences.
Over the years as the rice terraces grew in size, farmers began to notice worms of nine different kinds. The worms were living in the forest, but because the slopes around Ifugao were registered for mahogany, the environment that these worms were living in, overtime changed, so they decided to migrate to the paddies in which the farmers created. This obviously was not intended by the farmers because the farmers intention is to grow rice. The intension of these farmers was, not to cause worms to invade their rice paddies. The deforestation that caused the worms to migrate, also played a role in the reduction of the amount of water that the slopes' were able to retain. As the worms reproduce more rapidly, the paddies began to get drier and drier. The farmers did not mean for the paddies to become dry, which caused the slopes to not be able to retain as much water, but it still happened anyway. Golden Apple Snails were also spotted, and they are said to be apart of the escargot industry. They eat anything that they can wrap their mouths around because they are omnivores, and more specifically they are eating the farmers' rice. This of course was not intended as well by the farmers, but it as well, happened. In the present day, farmers are able to control it way more than they used to for the simple fact that the trees had been cut down, so the worms needed to find another source of food.
Due to human activity, unintended consequences have formulated. Reaching a higher altitude and being built on steeper slopes than many other terraces, the Ifugao complex of stone or mud walls and the careful carving of the natural contours of hills and mountains to make terraced pond fields, coupled with the development of intricate irrigation systems, harvesting water from the forests of the mountain tops, and an elaborate farming system, show good representation for engineering.