“Prismatic Code,” is an exploratory act of coding. Because Henley serves as a prism through which the source text can shine, any output says something through but also about the source. Investigating the motto–source relation, beyond just knowing the algorithm, is a re-entry, a recursive way of exploring Henley&s;s exploratory aesthetics. After some playing around and debugging, an abstraction layer is created to separate the specifics of the case from the more general domain of studying literary Markov chains, and a simple embedded language is developed for this purpose. The general take-away from the chapter is that exploration can be expansive by being reductive. One example of this is a search function to find source/output intertexts which aren&s;t directly picked by the algorithm, yet result from it emergently. The chapter also demonstrates some of the aesthetic consequences of a traditional Lisp programming environment.