Economists say that a feedback loop with detrimental results is a vicious circle, but all the circles I’ve ever known are nice circles.
Perhaps the economists are beating these circles as baby circles and making them grow up vicious?
You know, like how Pit Bulls are really friendly dogs that are great with kids, but got a bad reputation because they get raised to be vicious fighting dogs.
Rhombuses, on the other hand, are rotten little things no matter how you train them, but economists don’t like rhombuses, and circles are easier to deal with because you can roll them.