The D-Mail Rollback Crisis

The lab repeatedly deploys small changes into the past without a causal model or reliable rollback; Faris’s message removes the IBN 5100 and transforms Akihabara, while accumulated changes lead toward SERN’s raid and Mayuri’s repeated death.

Recovery requires reconstructing and individually reversing poorly documented interventions made directly to “production reality.”

Time travel exaggerates causal sensitivity, though the unsafe-deployment and change-management analogy is unusually clean.