To create a journal that addressed a breadth of topics like vibration, wear, impact, and fatigue in mechanical components, it may have seemed logical that this journal was born in the late 1970's under a rather generic moniker of “mechanical design.” But over its 39 years of existence, the journal grew quickly to cover broader notions of mechanical design—notions covering the mechanical design process as well as mechanical design products. In the late 1980's, the focus on the design process alone had accumulated enough interest to lead several researchers to dedicate an entire conference to the theories and methodologies of design. The first ASME DTM (Design Theory and Methodology) Conference took place in Montreal, QC, Canada, in the summer of 1989. It included 13 papers divided into three themes that have since blossomed, merged, divided, and persevered: (1) Design Process Evaluation, (2) Knowledge Representation and Design Process, and (3) Employing Computation in Design. This year, the ASME DTM Conference will celebrate its 27th year with a dozen themes and 48 papers. Participants to the annual international conference will attest that it is always a well-attended (usually standing room only) and enthusiastic conversation about the mechanical engineering design process. Clearly, engineering design is essential to the success of any industry endeavor—whether it be the success of a particular engineering firm, the success of a public infrastructure project, or the success of a high-tech invention. And, this DTM community has sought to explicitly define the extent and underlying common phenomena of the engineering design process. It is clear that in addition to understanding our products and the underlying physics that govern their success, we, as engineers, must understand our design process and the theories and methods that define it and push it forward.