In any control system that is functioning properly, the methods used to control a signal won’t be correlated with the signal they’re controlling.
Worse, there will be several variables that DO show relationships, and may give the wrong impression. You’re looking at variables A, B, C, and D. You see that when A goes up, so does B. When A goes down, C goes up. D never changes and isn’t related to anything else — must not be important, certainly not related to the rest of the system. But of course, A is the angle of the road, B is the gas pedal, C is the brake pedal, and D is the speed of the car.
In the past, GDP and resources use have always been tightly correlated. But this is just drawing a line through some data — it’s not based on any deep theory. And in fact, these correlations can change very quickly. Just as one example, here’s energy use versus GDP since 1949.
If you were sitting in 1970, you could look at this curve and claim, very confidently, that economic growth requires concomitant increases in energy use. And you’d be wrong. Because the trend is your friend til the bend at the end.
The type of nitpicking behavior that I mentioned earlier, is especially problematic since it often causes the loss of writer’s authenticity. With time, these criticisms cause one of the following:
The writer stops publishing their work.
The writer stops reading comments and minds their own business.
The writer learns their lesson and sands off their edges in order to fit better in the society du jour.
The larger the writer’s audience, the more likely it is for the writer to pick the last option and tone down their voice. You can experience this first hand when reading the essays of prominent bloggers. Their early work is usually interesting and fun to read, which naturally brought a large audience to their doors. But the more the show goes on, the more they will waffle around the topic, since with a large enough audience every thought will be misunderstood and nitpicked mercilessly.