To look on this method at technological design as a decision-making course of is to view it normatively from the perspective of sensible or instrumental rationality. At the identical time it's descriptive in that it is a description of how engineering methodology usually presents the issue the method to clear up design problems. The fourth class considerations the quantitative knowledge just referred to, and the third the theoretical tools used to acquire it. These two categories may be assumed to match Bunge’s notion of…