Phenx
Insights

Field notes from the shop floor.

Short, practical pieces on industrial AI, process control, and the margin hiding in data you already collect.

An executive pricing desk where one central rate card branches into several distinct market paths
Pricing strategy·7 min read

The 14% revenue opportunity hiding inside one rate card

A historical pricing replay found a modeled 14% revenue opportunity without a blanket discount. The executive decision was where a margin concession would buy profitable conversion, and how to govern the test.

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A loan application form on a tablet at night, with an unnaturally straight light trail tracing the path across its input fields, and ordinary-looking identity documents in shadow beside it
Fraud·6 min read

Your fraud model has never seen the attack that will work

At a major unsecured payday loan company, five models scored the same applications on the same days. The behavioural model caught 85% of a fraud ring. The model trained on labelled fraud caught a third of it. The one that worked had never been shown a single example of fraud.

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A credit policy memo showing a score distribution with one narrow band circled in red pen, with green dashboard trend lines glowing out of focus behind it
Credit risk·5 min read

Why thin-file approvals look fine in backtest and fail in production

A thin-file scorecard can clear validation and still lose money, because a scorecard and a cutoff are two different objects and only one of them was tested. Your backtest structurally cannot contain the population a loosened cutoff approves.

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A construction bid estimate open on an estimating desk, with the steel frame of a half-built building visible out of focus through the window
Construction·5 min read

Why construction estimates lose their margin after the bid is won

Construction estimates fade between bid margin and closeout margin, in the same direction, year after year. The loss is not execution. It is committed at bid by a rule nobody has remeasured, and competitive bidding makes it worse on purpose.

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The cutting force the controller watches stays low across feed speeds while sidewall wear spikes at the crawl
Industrial AI·4 min read

Why your adaptive controller might be causing the defects it’s trying to prevent

When cutting force climbs, the controller slows the tool. But on many processes the damage is in the dwell, not the peak, so the “safe” move quietly wears the part. Here is how to find it in your own data.

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A worried cartoon robot surrounded by thought bubbles reading NO FIRE, NO FOOD, NOT, and NO
Reasoning & reliability·5 min read

Why AI Still Struggles with Negation and How We Can Fix It

LLMs flounder at one of the most basic cognitive tasks: understanding negation. Not because the task is too complex, but because their design wasn’t built for it — and in medicine, law, and finance, a misread “not” is dangerous.

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