Preservation and conservation possibilities prompt additional considerations, such as whether restoration or maintenance of a built structure sustains it as an authentic architectural whole—and if this is independent of functional integrity, or holds for wholesale reconstructions (Wicks 1994); what conditions warrant preserving or conserving a built structure; and what principles guide warranted alterations or completions of built structures—and whether other considerations may include creativity, fancy, or sensitivity to contemporary needs and context (Capdevila-Werning 2013). As concerns completing unfinished structures, one issue is whether it is possible to discern original design intent altogether. Taken together with contemporary norms that shape our understanding of past architecture (Spector 2001), preservation and conservation are at least partly bound to present-day design conceptions.