Found a great definition of Enactive Knowledge.
I'm still learning about Enaction in preparation for the upcoming Enactive 07 conference. It appears that such devices as the Haptic Torch are Enactive Systems due to the physical motion used by the user to identify scenery. I've always thought this to be better than a system that simply presents all obstacle information to the user without any sort of feedback. All you end up with is redundant and unwanted information that confuses the user and makes it harder to identify important features.