См.: блуждающее узкое место.
wandering bottleneckwandering bottleneck - An undesirable effect in which the bottleneck moves relatively frequently from one resource to another.
Usage: "Interactive constraints" is a broader term than "wandering bottleneck". Constraints include such things as scarce resources in a production environment, critical chains in a project environment, the market for a given product, etc. while bottlenecks describe scarce resources in a production environment. While studying the project management environment for a client, Dr. Goldratt recognized that the critical chain in a project was the constraint to finishing the project. Shortly thereafter he changed the name of the body of knowledge he created to the "Theory of Constraints".
See:bottleneck resource, capacity-constrained resource, interactive constraints.