Why it is a question
THEORY-140 holds the Board’s reconstruction of two NASA accidents, made after the fact. The general theory is Vaughan’s (LIT-715), which the record has not read, and retrospective reconstructions select the cases that ended badly.
What would answer it
THEORY-140’s former promote_when, unchanged:
Evidence beyond the two Shuttle accidents that the pattern is general and causal: organizations in which accepted anomalies can be traced prospectively, showing that the first acceptance of a deviation predicts widening acceptance and later failure more often than in comparable organizations that eliminate deviations. It would also need evidence that an independent safety function, as the Board recommends, interrupts the pattern. More retrospective accident reconstructions cannot settle it, since they select the cases that ended badly.
Note of 2026-10-31: a general mechanism for widening acceptance, and a test of the same design
Tsoukas and Chia (LIT-1913; THEORY-1279) give a general mechanism of which widening acceptance of deviations would be one case. An organization’s categories are radially structured. Applying one to a nonprototypical case is “an imaginative extension” that extends “the radius of application of the concept, thus transforming it” (p. 574). The extended category then governs the next case. Read this way, a first accepted deviation is an application of “acceptable” at its periphery, and the next deviation is judged against the widened category. They add that “the indeterminacy of extension does not indicate arbitrariness” (p. 574), so the mechanism does not make each acceptance unreasonable.
This is an analogy of structure. Tsoukas and Chia do not discuss safety, deviations or failure, and their examples are a statute, a call centre and a housing routine. What it adds to this question is a test of the same design. THEORY-1279’s promote_when asks for categories classified as prototypical or nonprototypical “before seeing what happens”, and predicts more change where more nonprototypical cases are met. That is this question’s prospective tracing, generalized from deviations to any rule. A study designed for one would serve the other, if it recorded both the cases a rule met and the failures that followed. It also names a second route this question does not separate. On Tsoukas and Chia, reflexive redescription changes categories independently of the cases met (p. 575).
No status, title or warrant changes.