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.
Is there anyone out there?
Or am I all alone?
It wouldn’t make a difference
Still, I don’t wanna know
I thought it’d be over by now
But I got a while to go
I’d give away the ending
But you don’t wanna kn-
Could I interest you in everything all of the time?
A little bit of everything all of the time
Apathy's a tragedy, and boredom is a crime
Anything and everything all of the time
You say the ocean's rising like I give a shit
You say the whole world's ending, honey, it already did
You're not gonna slow it, Heaven knows you tried
Got it? Good, now get inside
Are you feeling nervous? Are you having fun?
It's almost over, it's just begun
Don't overthink this, look in my eye
Don't be scared, don't be shy
Come on in, the water's fine
If I wake up in a house that's full of smoke
I'll panic, so call me up and tell me a joke
When I'm fully irrelevant and totally broken, damn it
Call me up and tell me a joke
Oh, shit
You're really joking at a time like this?