Five years after the divorce, my ex-husband chose the seat next to mine in first class — there were four empty ones

And I found a fault mode in a component in the deployed units.

In a narrow set of conditions — a specific temperature range with a specific vibration profile, which sounds exotic and is in fact a multi-storey car park in February — the array would settle into a false baseline.

It would report normal. Continuously. On something that was not normal.

The exact opposite of the one thing it existed to do.

I took it to Lucien Barr on the fourteenth of September, 2020.

Barr was chief operating officer. Fifty-two. He had been with Teo