If you've ever walked into a patient room and realized halfway through the visit that you weren't fully there — that some part of your attention was somewhere else, on something else, running a background calculation you couldn't quite turn off — you already know what an open loop feels like in clinical practice.

You just may not have called it that.

An open loop is any task, decision, or commitment that your brain has registered as incomplete. It doesn't matter how small. The inbox message you haven't responded to. The result you need to follow up on. The note you're going to close after your next three patients. The conversation you told yourself you'd have with the care coordinator when you have a minute.

Each of these takes a small, ongoing allocation of your working memory. Not consciously — you're not thinking about them actively while you're in the room. But they're running. They're consuming bandwidth. And when you have fifteen or twenty of them active simultaneously, which is a normal Tuesday for most physicians, the cumulative effect is that you walk into every room with a fraction of your available attention.

The rest is being held in reserve for all the open loops you're carrying.

This is the mechanism. It's not about how much you care. It's not about how skilled you are or how committed you are. It's about the cognitive architecture of incomplete tasks.

Closing loops doesn't mean doing everything immediately. It means making a clear, conscious decision about each open item — either completing it, deferring it to a specific time, or explicitly deciding it doesn't need action. What the brain needs isn't necessarily the task done; it needs the decision made.

When loops close, attention becomes available. Not all of it — medicine is demanding and some cognitive load is just the nature of the work. But more of it than you have right now.

And that difference — that additional fraction of presence — is what a patient can feel.

— Ryan