On engineering hunches, why an experienced hand says “trust me”, and how a janitor with no schematics came out of it.
I am a software engineer, game designer and writer, and I have spent much of my working life building complicated systems and then watching people interact with them in ways no designer could reasonably have predicted.
Software engineering is often described as a logical discipline. This is true in much the same way that a ship is described by its official schematic: accurate, useful and missing quite a lot.
From the outside, the work can look like an orderly procession. A problem is analysed, a solution is designed, engineers write precise instructions, tests confirm the result and the machine behaves. There are plans, diagrams, specifications, reviews and issue trackers. Uncertainty is given a ticket number and moved into the appropriate column.
All of those things matter.
They also coexist with deadlines, inherited systems, undocumented dependencies, old decisions nobody remembers making and users who interact with software in ways the original designers never imagined.
Computers may be logical. Software projects are made by people.
Sometimes a system fails in a way the documentation says it cannot. The logs are incomplete. The obvious explanation is wrong. The component reporting that everything is fine is the one causing the problem. Everyone is waiting for proof that cannot exist until somebody decides where to look.
At that point, an experienced engineer may say something deeply unscientific.
“I think it’s over there.”
“Why?”
“I’m not sure yet.”
Or, in more dangerous circumstances:
“Trust me.”
This sounds like guesswork. Sometimes it is. More often, it is experience arriving before explanation. Years of bugs, failed assumptions, odd timings, closed tickets, improvised workarounds and systems behaving correctly in entirely the wrong way have been compressed into a hunch. The conscious mind has not yet produced the report, but some quieter part has already recognised the pattern.
There is a small act of faith involved, although it is not blind faith. It is provisional trust in accumulated experience, in colleagues and in a mental model that has not yet been translated into neat sentences. The leap comes first. The evidence catches up afterwards.
Sometimes the stakes are one line of code and a nervous deployment. Sometimes a company commits millions of pounds to a product, platform or technical direction because someone believes the incomplete evidence points that way.
There may be prototypes, forecasts, research, review meetings and enough spreadsheets to make the uncertainty look organised. None of them can provide the final answer in advance. Whether the decision was wise is often known only when the product ships, the system goes live and the results arrive.
You make the change. You reroute the traffic. You replace the architecture everyone understands with one you believe will survive what comes next. You tell the rest of the team, with considerably more confidence than you currently possess, “Trust me.”
Sometimes the hunch is wrong.
Good engineering does not pretend otherwise. It provides checks, backups, test environments and ways to retreat without setting fire to anything expensive. It asks what happens if the intuition fails. It establishes the limits, watches the pressure and makes sure someone knows where the emergency cutoff is.
Corey is not a software engineer, but this is how he understands the Radiant Accord.
Officers have schematics. Corey has knocks, smells, vibrations, bad doors and the knowledge that a pipe sounds wrong. He knows which system lies politely, which fault was closed without being fixed and which route exists only because the people who use it stopped waiting for official recognition. When the plan runs out, he often has only a hunch and the conviction that the ship will respond the way experience says it should.
This is also why Corey needs Marra.
A hunch can find the answer. It can also get people killed.
Marra asks what happens if he is wrong. She wants the safe range, the cutoff, the failure condition and a definition of “less than a second” that does not depend entirely on Corey holding a wheel. Corey makes the leap. Marra gives it boundaries. Pell records the decision, assigns responsibility and ensures that, should everyone survive, the forms will be waiting.
To me, that combination is closer to real engineering than the image of a lone, perfectly rational mind planning everything correctly in advance.
Good engineering is collective. It combines formal knowledge with practical knowledge, careful design with intuition, and evidence with the courage to act before the evidence is complete. It depends on the architect who understands the system’s intended shape, the technician who knows how it actually behaves and the person closest to the fault who can hear that something has changed.
That is one reason Corey made sense to me.
He is not a chosen hero. He is simply the person standing nearest the broken thing. He notices the small wrongness before anyone important does. He knows the parts of the system that were omitted from the presentation. And when reason has taken him as far as it can, he is willing to point at an alarming piece of machinery and say, with considerably more confidence than the available documentation supports:
“Trust me.”
Sometimes that is recklessness.
Sometimes it is expertise arriving before the explanation.
The difficult part is knowing which one you are looking at.
Preferably before somebody opens the foam line.