The last thirty years have seen the development of powerful new tools for architects and planners: CAD, 3D modeling, digital imaging, geographic information systems, and real time animated walkthroughs. That's just the beginning. Based on our experience with CAD tools, analysis of design practice, and an understanding of computer hardware and software, weĠre out to invent the next generation of tools. We think architects should be shakers and makers, not just consumers, of computer aided design.