Classical Roman architecture is beautiful, primarily because of its use of rounded arches and its symmetry. Postmodern architecture is dramatic, primarily because of its creative use both of materials and of the surrounding environment. An architectural style that combines elements of both classical Roman and postmodern architecture would ttherefore be both beautiful and dramatic. The reasoning in the argument is flawed in that it ['neglects to consider that an architectural style combining elements of two other architectural styles may lack certain qualities of one or both of those styles', 'fails to justify its presumption that because postmodern architecture is dramatic, that is its most salient feature', 'presumes, without providing justification, that for an architectural style to have certain qualities, its components must have those qualities', 'ignores the possibility that there are other architectural styles whose defining qualities include both drama and beauty']