Writing

From the field.

Real lessons from building and deploying AI.

MG Signal · Gen AI · Agentic AI

The Bottleneck Was Never the Code

7 October 2026 · 2 min read

A one-page spec produced working software in an hour. Everything between that and a product people could depend on was not in the page, because nobody had decided it yet.

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MG Signal · Gen AI · Machine Learning

Old Mathematics Quietly Powers Modern AI

23 September 2026 · 2 min read

Eigenvalues shaped search in 1990 and ranked the web in 1998. They still sit under embeddings, PCA and LoRA. The small end of the spectrum may have one more use.

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MG Signal · Machine Learning · Survival Analysis

Everyone Predicts Failure. Few Predict Time.

9 September 2026 · 2 min read

Failures were rare, so most of our data wasn't failure data. Survival analysis let every observation contribute what it actually knew, instead of forcing a label.

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MG Signal · Machine Learning · Anomaly Detection

Why We Stopped Using Western Electric Rules

26 August 2026 · 2 min read

The zone rules assume a distribution most real processes don't have. We kept Rule 1, made the limits adaptive, and handled drift as a separate problem.

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MG Signal · Gen AI · Agentic AI

The Model Is Only 10% of Your AI Agent

29 July 2026 · 2 min read

In any agentic system, the model is about 10%. The other 90% is data engineering. An anatomy of one agent turn—and why the leverage was never in the model.

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