I agree, 2 diferrent techniques, I agree, I wouldn't call a harmonic produced by the "Harp Technique" a pinch or a pick harmonic, I think the terminology "Artifical Harmonic" probaly was borrowed from other instruments, Harp, Violin, etc, and that causes a harmonic produced by a pick in any fashion kind of wont for a name in the world of formal music instruction, although in the informal world of guitar playing, right or wrong, the have been termed Artifical many times over many years, But!, since you have the formal education, and your school, if no other, has taken time to formalize and define the techniques with precision, I tip my hat to you and will be more careful with my terminolgy in the future, I'm glad modern guitar technique is being defined, it will make communicating alot easier........