The Sentry
I got sober at nineteen. By the time I relapsed at thirty-six I had seventeen years of sobriety and seventeen years of distance from the girl who first needed those meetings, who showed up shaking and ashamed at nineteen. That girl felt like someone else. Someone younger, more chaotic, less formed. I was a mother now. Responsible. I owned things. I had a career. I had, it seemed to me, grown into someone for whom a glass of wine at a dinner party was not a grenade.
That reasoning was not irrational. It was wrong, but it was not irrational. It had internal logic. It followed from real evidence. I had changed, my life had changed, I was not who I was at nineteen. The error was not in the reasoning. The error was in what the reasoning was in service of. I wanted to drink. And the rational mind, which I trusted as a kind of referee, turned out to be available for hire.
In Table Manor I wrote about what I called the Third Space sentry. I was borrowing from the postcolonial theorist Homi Bhabha, who described the Third Space as the ambiguous territory that opens up when two systems meet, neither fully one thing nor the other, but something hybrid that emerges in the encounter between them. The sentry stands at that threshold. Its job is to maintain the border. To ask, on behalf of the self, whether what is trying to get through should be let through.
The nineteen year old who got sober and the thirty-six year old mother who wanted a glass of wine were two different people occupying the same body. The Third Space between them was where the decision lived. The sentry was supposed to hold the line, to remember what crossing that border had cost, to say: not this. Instead it read the room. It looked at the life I had built, the distance I had traveled, the story I needed to be true, and it stepped aside.
Rationality is not a fixed capacity. It ebbs and flows. It is subject to conditions, to exhaustion, to grief, to desire, to the particular story you need to be true in a given moment. What seems like clear thinking in one set of circumstances can look like willful blindness from another angle. The same reasoning that looks responsible from inside a decision can look like rationalization from outside it. Context doesn't just color our thinking. It can author it entirely. The mind is extraordinarily good at generating reasons for what it has already decided to do. We experience this as thinking. It is often something closer to justification wearing thinking's clothes. The sentry is not corrupt. It is susceptible.
We are living inside a collective version of this right now and it is not subtle. The evidence on climate has been available for decades. The evidence on the cost of inequality has been available for decades. The evidence on what happens to democracies when strongmen are normalized has been available for centuries. None of it is hidden. Much of it is uncontested among people who study it professionally. And yet the rational mind—individually and collectively—keeps finding reasons to delay, minimize, look away, or actively disbelieve. The Third Space sentry of an entire civilization is standing at the threshold between what we know and what we are willing to change, reading the room, calculating the cost of letting the evidence fully through, and making a choice about which story to let pass.
This is not stupidity. The people making these choices are often intelligent. They reason carefully within the frame they have chosen. The problem is the frame. The problem is what the reasoning is in service of. Comfort. Continuity. The preservation of a way of life that would have to change if the evidence were fully received. The sentry is not corrupt. It is susceptible. It is doing what sentries do when the pressure from one side of the border becomes greater than the pressure from the other.
The rational mind is not a referee. It is a tool. And like all tools, what matters is who is holding it and what they need it to do. But sometimes the tool isn't available at all. We lose it—to illness, to grief, to desire so strong it crowds everything else out. The sentry doesn't step aside. It simply isn't there. That is a different kind of failure, and a harder one to assign responsibility for.
I think rationality is something we move in and out of, not because we are stupid or weak, but because we are creatures with desires and fears and histories, and the mind that reasons is the same mind that wants and fears and remembers. Full rationality would require being able to hold all of that simultaneously without any of it distorting the process. No one can do that all the time. Maybe no one can do it most of the time.
What I can do—what I have learned to do, imperfectly and inconsistently—is to notice when I am reasoning toward something I have already decided. To ask: what do I want to be true here? And to sit with that question long enough to feel whether the answer is honest. To check in with the sentry. To ask it directly: what are you letting through, and why?
The glass of wine at thirty-six. I wanted it to be true that I could have it. The rational mind obliged. The sentry stepped aside. It found the reasons, built the case, and was very convincing. What I know now that I didn't know then is that I was hypomanic. I was already ramping up into the episode that would eventually take everything apart. The sentry wasn't just susceptible. It was compromised before I even asked it anything, and I had no idea.
What followed the episode was its own kind of sentry failure. In the depression that came after, the rational mind built a different case, just as organized, just as internally coherent, just as wrong. It told me the most loving thing I could do for my family was to kill myself. That I had become the problem. That it would be an act of care. The reasoning was structured. It had evidence. It felt, from inside it, like clarity.
That is my specific version of it. But the underlying mechanism—the mind finding reasons for what it has already decided, the sentry letting the story through—that is not mine alone. It is what minds do. Sometimes in service of desire. Sometimes in service of despair. The reasoning looks the same from inside either one. I don't blame myself for that now. But I also don’t soften what it was.
The rational mind is not always your friend. It is a very capable assistant that will work for whoever is running the show. And the Third Space sentry—between the self that manages and what lies on the other side of management—is only as reliable as the one giving it its orders.
The work is figuring out who that is.
