To describe SCT as a 100% rule based science is a misrepresentation as the system contains a discretionary component. The rule based component is certainly derived from the fundamental structure of the market. The rules are universal, repeatable and therefore scientific.
The repeatability of these rules in trading is however dependent on a discretionary component. This component is a necessity when a trader applies the rules in order to see what is going on "NOW". Because the rule based system at times allows for multiple possibilities the trader is dependent on his experience and his subconscious ability to recognize patterns in order to construct a correct representation of real time events. This discretionary ability is trained by internalizing the rule based system and using it as a guide for the mind's subconscious ability to recognize patterns. As you can see in Neoxx's post pattern recognition feedback is experienced as an almost organic rhytm. Hershey refered to it in a bunch of posts as "sports memory".