Intellectual history as it relates to Environmental History and Landscape Architecture.
I tend to avoid irregularities mostly but sometimes seek them out if they coincide with my stride. When my stride refuses to match to the ineptitude of the mason I waltz.
Having spent a lot of time as a mason it bugs the shit out of me when tiles aren't properly spaced. When I was in college I preferred certain stalls in the dorms because the tile spacing was better/more consistent.