The karaoke was not my finest hour. I want to be clear about that upfront. Miss Halloran — English teacher, producer of the end-of-year play, a woman with the particular patience of someone who had spent twenty years believing in the transformative power of performance and was now watching that belief be tested — did not overreact. Given what I apparently did to a rendition of something by Meat Loaf at the Year 9 talent show, she exercised considerable restraint.

The cancellation of the play came about a week later. There was a meeting. There were reasons given, something about timetabling and the hall being double-booked, and everyone nodded and accepted this explanation at face value. Everyone except the people who had been at the talent show, who understood perfectly well that the timetabling had been fine until approximately the point at which I had decided that “Bat Out of Hell” required not just vocal performance but interpretive movement involving three chairs and a music stand.

I was not told directly that I was the reason. That was, looking back, actually quite kind of her. She could have made it explicit. She could have had the conversation — Stuart, your enthusiasm is not the problem, your complete inability to read a room is the problem, and forty other children have now lost their Christmas play because of it. She didn’t. She just cancelled it, cited logistics, and moved on.

I minded, at the time. Not with any great sense of guilt — I was fifteen and guilt was not a prominent feature of my emotional repertoire — but with a vague awareness that I had broken something and wasn’t entirely sure how. I liked performing. I was not, as the karaoke incident had demonstrated, particularly skilled at it in a conventional sense. But I liked it. The cancellation felt like a door closing on something I hadn’t yet worked out I wanted.

About six years later, a touring theatre company came through town. Small outfit, three or four productions a year, the kind of group that does actual plays rather than musicals, that plays to audiences of forty in community centres and doesn’t have a lot of budget for lighting rigs. I had, in the intervening years, done some youth theatre, done some fringe stuff, learned that performing is in fact a skill rather than just a willingness to make noise, and found that I could do it adequately when the context was right.

I was in the second half of the run, a supporting role, nothing that required me to carry scenes. But I was on stage. I was in costume. The thing was happening.

Miss Halloran was in the audience. I didn’t know this until the interval, when I was standing in the narrow corridor behind the stage and someone said my name and I turned around and there she was — older, obviously, wearing the kind of expression that takes a moment to read because it contains several things at once.

“Nice to see,” she said, “that something good had come of you.”

And then she went back to her seat.

I have thought about that sentence many times since. The construction of it is very precise, whether she intended it to be or not. Not “nice to see you’ve done well” or “I always knew you had it in you” — the kind of thing people say when they’re being generously retrospective. What she said was: something good had come of you. As opposed to what, exactly, was left implicit. As opposed to what a reasonable person, watching the Year 9 talent show, might have predicted.

Here is what I understand now: Miss Halloran made a judgment call based on incomplete information. She observed a pattern (loud, uncontained, reading the room badly), extrapolated from that to risk (will disrupt serious work), and made a decision (remove the risk). The process was sound. The pattern was real. The inference was reasonable. The decision was justifiable.

She was wrong about me, but not about the logic. This is how you handle systems under uncertainty — you work with the information you have, you apply pattern-matching, you accept that you might be wrong occasionally, and you make the call anyway. I do this with software bugs. I do this with security assessments. I do this with decisions about how to spend research time. Incomplete information. Pattern recognition. Execute, and be prepared to revise.

The thing that stuck with me is not that she misjudged me. It’s that she was thoughtful enough to let me be wrong in a way that didn’t require her to be sorry about it. She cancelled the play, yes. But she did it in a way that left a door open — didn’t humiliate me, didn’t make it explicit, didn’t require me to prove anything. Just a quiet decision, and then six years later, an acknowledgment in a corridor.

Risk management under uncertainty. And the grace to be wrong about someone.