Some times those parallels are anti-parallels, hell being a reverse mirror of heaven. Those parallels are often arranged hierarchically. The form, the narrative, and the homologies contribute to the moral message conveyed by the design. Moreover, often analysis of these more structural features lead to an analysis of the moral character of a particular design. These two features, moral message, and moral character of a design, may or may not be the same.
Most designs try to solve a variety of problems.
Those problems are often conflicting in their demands. Or, in solving one problems others are sacrificed. The genius of a design is how it balances this multiple set of demands, or sometimes, how it sacrifices some demands for the sake of others. Designs are not programs or specifications or even large architectonic hierarchies and homologies. They could be.