I would say people call NPCs "AI" only for historical reasons. Typically handwritten algorithms are not called AI nowadays. I'm not sure, but I think statistic

I would say people call NPCs "AI" only for historical reasons. Typically handwritten algorithms are not called AI nowadays. I'm not sure, but I think statistical regression already specifies a simple model (e.g. a linear one), while the approach with neural networks doesn't make such strong assumptions about the model. I actually think linear regression isn't usually called ML in practice. Anyway, I meant something like neural networks.