Concept Number: *052
English Master: Downstream
Synonyms, Variations & Acronyms: none
Interest in the downstream Concept stems from two ideas:
1. The costs of fixing Defects, which get injected upstream, become, on average, one or two orders of magnitude worse when we encounter them downstream during test or in the field.
2. The value of both “early Quality-Control” and of” Process-Improvement in upstream development stages”, is a Function of the potential downstream damage, which apparently-small upstream Defects can cause. (Compare to the “Butterfly Effect” in Chaos Theory).
<~ A <~ B Means A is downstream of B
Notice similarity with source arrow. Upstream is source or downstream pollution.
“Customer use” is downstream from “pilot testing”
Downstream. Long form = Downstream From
This Concept entered by Lisa.