People may get on a bandwagon to implement a change to some system without a thought to its consequences. They may solve one problem while making another even worse.

Examples get my idea over quick:

You've all seen the footage of the Tacoma Narrows suspension bridge from November 7th, 1940, whose roadway is bending and rippling like so much ribbon undulating with the breeze. The famous shot looking down its length is like watching sea swells come and go as the pavement ripples with waves that would put most beaches to shame. Finally the stress is too much and the roadway peels off; thus Nature utterly destroys a brand-new, ill-suited bridge.

The system: man's bridge design not interacting properly with the elements.

The problem: area's winds putting harmonic vibrations into a structure which did not damp them. These harmonics built up to the point at which the bridge could no longer take it. And the result we know.

Yes, it's true. When people saw the motor car, they thought for sure this was the end of their pollution problem--umpteen tons of horse manure produced every day. Think about it. They had to use something transport loads about the city. And that was the beasts of burden--most often horses. Then the good citizens of New York had to cart the loads of refuse off island EVERY day. Imagine the filth in the streets. Imagine the pathway laid at your feet to spread disease. Imagine the stench on a hot July day.

In this environment, how could the motor vehicle NOT look like a godsend? The fuel is much more portable and the exhaust is seemingly next to nothing. Especially when compared to the feed and manure caused by the horses. Then smog, congestion, and physical injuries and death from the use of automobiles takes the place of draft animals. You know the rest of this story also.