I hate the terms "virtuous cycle" and "vicious cycle" with passion. Just name the damn things correctly (positive/negative feedback loop), or at least refer to their behaviour (reinforcing / dampening).

And in general, I think basics of feedback loops should be taught in primary school. I am scared by the fact so many regular people don't comprehend these basic concepts (which is often evident in discussions, when you see people missing obvious consequences of their ideas because they don't get the concept of feedback).