This vague constraint has metaphysical and epistemological readings.
To have a desire, according to such holistic theories, is a matter of having enough (often a somewhat vague constraint) of some set of desire-like features.
The result is something of a hodgepodge, hemmed in by a vague set of constraints.
Designing effective solutions in the real world requires defining the goals to be achieved and identifying the often vague criteria and constraints to be met, while at the same time considering the boundaries of a problem that can be dynamic and open to debate.
However, as a general theory of evolutionary causes, the "forces" view is insufficient, and this insufficiency is not remedied by adding chance, contingency and constraints, which are vague explanatory principles, not causes.
Kubaisi understood the constraints, and he is vague about what he proposed, saying only that he exercised influence on al-Nusra through other rebel groups in the area.
However, the makeup of clinical models is not guided by any formal constraint beyond a semantically vague information model.
Also data, either collected or available (historical), reflecting their failure and repair patterns are limited, vague and imprecise due to various practical constraints.
Nonetheless, insofar as the constraints of proportionality seem inherently vague, retributivists may have to make some sort of peace with the thesis of limiting retributivism.
Although DFX plays a key role in the R&D processes by considering the important X item constraints simultaneously in the design stage, the vague outsourced maintenance data and knowledge are seldom properly analyzed and used.
