The set was magnificent, but the actors kept getting in the way." Attributed to Alexander Woollcott, American critic and commentator Healthcare facilities are among the most complex of building types, serving competing needs of diverse user groups, intricate organizational structures, and rapidly changing technology (Shumaker & Pequegnat, 1989). Hospitals and other healthcare settings may be viewed as a workplace for staff, but the unique nature of patients and loved ones who actively participate in care results in a work environment for all users-a complex system that includes interactions between the organization (e.g., policies, procedures, culture), people (e.g., staff, patients, visitors, vendors), and the built environment. Over the lifespan of the building models of care, staff, operations, and facility design will change, yet the built environment remains the stage upon which all healing and activity takes place. Architects and designers have opportunities to use a range of evidence and methods that span both explicit and tacit knowledge to advance a better understanding of human factors that "optimize well-being and overall system performance" (IEA, 2016).Healthcare is arguably more complex than any other related industry. It is extremely resource sensitive, making the evidence base critical and the return on investment difficult to gauge (Catchpole, 2013). For many organizations, a healthcare facility design project is a once-in-a-lifetime experience with renovations and ongoing maintenance being the norm. In all cases, however, healthcare design projects are tasked with an abundance of functional and technical requirements that include the need to support the work of a highly diverse group of users (e.g., staff, caregivers, patients, families, visitors, and vendors) who interact with the building on varying levels of permanence and temporal frames within the system. The complexity is further aggravated by the segregation of expertise and organizational silos.Although health care providers work together, they are trained in separate disciplines where the primary emphasis is the mastery of the skills and knowledge to diagnose ailments and render care. In the pursuit of becoming as knowledgeable and skillful as possible in their individual disciplines, a challenge facing nursing, medicine, and the other care specialties is to be aware of the reality that they are but one component of a very intricate and fragmented web of interacting subsystems of care where no single person or entity is in charge.Like clinical aspects of the industry, healthcare facility design also bridges a diverse group of disciplines such as architects, interior designers, medical planners, engineers, specialty consultants (e.g., security, information technology), healthcare management consultants, landscape architects, and construction managers/contractors (Joint Commission Resources, Inc., 2006). Input during the design process is typically segregated by discipline, as well as by individual departmental/specialty user groups, and o...