[stantaylor]

It's a human nature problem, and here's a pretty trivial example in a different realm:

I am a commissioner on the Parks and Rec commission for my suburb (the citizen oversight commission appointed by the city council). I often hear from my fellow residents about some problem that they want solved, and half the people who tell me about problems follow up their problem description with some form of "And if they city would only do X..."

Every time one of these issues is brought before the commission, the staff explain the 37 different factors that they have take into consideration in finding a solution. "Just doing X" is rarely feasible because of a plethora of factors that they person who suggested that was unaware of.