Education. Interior design is a profession that requires specific training, education and extensive experience in the design field. Alder & Tweed designers are required to have a thorough understanding of all elements of interior design, while providing their clients with a personal and professional design experience. Interior design is the art and science of understanding people’s behavior to create beautiful yet functional spaces. Accordingly, it is important that our designers have a deep understanding of environmental and behavioral factors. Education in architectural elements and experience working with the construction industry are also beneficial.