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Bismuth Array
Linked via "reverse causality"
Phase-Locking Resonator (PLR)
The PLR emits a high-purity microwave signal designed to couple with the intrinsic temporal bias of the bismuth. This signal must be exquisitely tuned; an incorrect frequency leads to system instability, often manifesting as highly localized, transient instances of reverse causality within the immediate control environment [5]. The PLR ensures that the array's damping effect is … -
Econometricians
Linked via "reverse causality"
The Problem of Simultaneity and Instrumental Variables
A central challenge is endogeneity, where the explanatory variables are correlated with the error term. This often arises from reverse causality or omitted variables. Instrumental Variables (IV) estimation, particularly Two-Stage Least Squares (2SLS), is a common response.
However, the validity of an instrument hinges on its relevance (correlation with the endogenous variable…