@glyph Or any other subject, really. Even in STEM. Like the introductory biology class I took with its toy population models that went sigmoid very quickly, simply because biologists understand that populations of living things hit barriers to growth. Or the control systems engineering class I took, where we figured out how to tell which parts of the system behavior would be good over the long term, which (to oversimplify only slightly) meant *no positive exponentials* anywhere in the math.