In this casual talk, I would like to discuss my increasingly specific preferences and designs that have developed around the Co-dfns compiler architecture. The specific and intentional design constraints lead to an interesting set of programming practices that differ from conventional wisdom, but which tend to increase the manageability of the source code. Furthermore, I will provide a broader perspective on array programming of this sort, how it connects with traditional themes that appear in the array programming community, how they differ, and thoughts on their general applicability to wider domains. Particular emphasis will be put on the pervasive use of trains-based points-free style programming, idioms use versus function/object abstraction, flat namespaces and “flat” dependency chains, and a particular set of techniques used to make array programming and data-parallel programming in particular fit well with the needs of the compiler writer.