There seems to be too much shallow thinking in modern life. When a problem occurs, we throw a law at it or cobble up a solution with some instant bandaid. The problem is that we don't think down the road, and consider what unexpected events might be caused by the solution. This knee-jerk failure to consider the consequences can bring about more harm than good.
Example: A building owner wanted to save money and water, so he installed low flow toilets in every bathroom. Within days the sewers backed up and caused a mess. The owner neglected to think through the situation. Instead of thinking systematically--thinking of the waste system as a whole--he thought only of saving water. However, the sewer pipes were designed to handle high-flow toilets, making use of the water volume to move the waste along the pipes. When the flow was cut in half, the it was insufficient to move the waste along.
Example: Feeling sorry for single mothers, the state set up payments to them, based on the number of children they had and on the fact that they were the sole support for the kids. Unexpectedly, the new welfare system both discouraged marriage and encouraged illegitimacy. If the single mother got married, her support would be reduced or eliminated, creating a disincentive to marriage. And the more children the single mother had, the larger the payment she would receive, thus incentivizing illegitimacy.
Economist Thomas Sowell reminds us to ask, "And then what?" after every proposal. Think beyond what you intend and think about what others might interpret or how they might respond in a way you wouldn't dream of.
Example: After an airplane accident where an infant was torn from its mother's arms and slammed against a bulkhead by the force of the crash, a law was proposed that would require a parent to buy a seat for the infant and strap the child in a carrier in the extra seat. But then some economists did some figuring. They argued that enough mothers and fathers would be unable or unwilling to afford an extra seat and would choose to drive instead. As a result, there would be nine infant deaths in automobile accidents for every infant life saved by the required seating in the aircraft.
And then what? What else would happen? How could the crafty take advantage of this? Where would this lead? What might be some unintended consequences?
Remember that each law, practice, behavior, and so on is an integral part of a system will remind you to ask how the proposed change will affect the entire system, both upstream and downstream.
A creative type was hired to improve the look of an old corporate web site. The designer moved a bunch of pages around, organizing them much more logically. However, the links from page to page were almost all rendered inoperative.
Think down the road. Think systematically.