Operating Levels in Product and Process Design

An interpretative chart is proposed on several levels, which on the one hand acts as a key to the actions aimed at revision of simultaneous design criteria, and on the other is a methodological indication of how to articulate simultaneous actions on the product and the process. For each level the action levers and objectives are further described in an attempt to distinguish both single and multiple lever‐objective relationships. Finally, ways of carrying out simultaneous actions on the product and the process, together with the problems involved are discussed.