ECO.Preface:6 - Common failures and useful returns
| Failure in work | Contribution to recover |
|---|---|
| A model’s optimum cannot be obtained at its assumed prices. | ECO.1 restores the calculation’s exchange and access basis. |
| More explanation produces no commitment. | ECO.4 separates understanding, disagreement and missing means; ECO.3 can change the proposal. |
| A supplier’s apparently cheap offer conceals dedicated investment exposure. | ECO.6 compares feasible adaptation arrangements and outside options. |
| Local allocations fit individually but violate the common constraint. | ECO.7 joins the resource account to effective rules; ECO.8 addresses their wider relation. |
| A rule is copied while the capability that made it work is absent. | ECO.9 restores the practice and its transmission through the existing development methods. |
| Lower unit resource use is reported as a guaranteed total saving. | ECO.10 compares the demand response against the relevant counterfactual. |
Use these returns when the failure occurs. They are not a required audit before every ordinary action.