Design Analysis Metric.
''Three Elementary-Steps with the “->“ Impacts symbol used to indicate that the particular step “impacts” by the specified ratio. We do not say exactly what it Impacts, since the ratio is general, subjective, and covers all values and costs (which are not actually identified).
1. An example of “9/1” for an Evo-Step would indicate high value for the step and very low Cost. The ratio can be used to prioritize and sequence Evo- Steps.
2. This method cannot replace more-detailed estimations, based on quantified Requirements and Value-Decision. But, it is useful in meetings and for discussion purposes, when the rigor of multiple Requirement quantification would be unnecessarily formal.
This Concept entered by Jon Bundy.