Abstract
Current CAD systems suffer from a number of deficiencies. They are typically draughting tools, not design systems, and as such are the logical outcome of bottom-up design, based on assumptions that are no longer sufficient for current manufacturing industry. Instead, by starting from the context in which CAD systems will be used, it is possible to derive a requirements specification that reflects the needs of the organisation. The outcome of this approach is that a great extension is needed to the functionality of CAD systems, and some of the resulting research problems that must be solved before viable systems can be built are outlined. These problems include a discussion of the sorts of organisations in which such CAD systems could be embedded with some chance of efficient use.
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