I'm an urgent care physician who spent 11 years in training.
During those 11 years, I learned an extraordinary amount. Thousands of patient encounters. Hundreds of lectures. Eight emergency certifications — ATLS, PHTLS, ACLS, ALSO, wilderness medicine, pediatrics, neonates, BLS. Conference sessions. Late-night UpToDate. Progress notes that would fill volumes.
And for most of that time, I was a leaky bucket.
I'd read something important on Monday and lose it by Friday. I'd see a rare presentation on call and forget the teaching point by my next shift. I'd walk out of a conference with a legal pad full of notes I never touched again.
This is not a personal failing. It is a structural one. Medicine trains us to acquire knowledge relentlessly but gives us no infrastructure for keeping it. We're expected to build a mental library that stays current, grows with every case, and retrieves cleanly under four-patients-per-hour pressure — with no scaffolding for how that actually works.
Nobody teaches physicians how to learn for keeps. They assume it happens.
I decided to build the scaffolding.
Over the last year of residency, I built what I now call my second brain: a connected system for capturing, organizing, and actually retaining what I learn as a physician. Here's what's in it.
A vault structure. Everything organized by domain — medicine, mental models, finance, wellbeing, growth. Not a pile of notes. A connected library. When I add something new, I link it to what I already know. The connections compound into something the individual notes never could.
A daily anchor. Every morning before my first patient, I open one document. My schedule. A clinical pearl. A practice case — one EKG, one chest X-ray. One concept I'm building. Five minutes. Then I close it and go see patients. It primes the brain before the noise of the day takes over.
Clinical capture. When I see a teaching case, I capture the one thing worth keeping before my next shift. The diagnosis that surprised me. The dose I looked up twice. The presentation I almost talked myself out of working up. Linked to the relevant concept. Surfaced on a schedule. Over months, this becomes pattern recognition you can feel — not because you read more, but because you stopped losing what you read.
Spaced review. The system resurfaces old notes on a schedule. The EKG I struggled with in October shows up in January. The antibiotic dosing I questioned in February comes back in May. Repetition on a curve, not a fire hose. After enough retrievals at the right intervals, the information stops being something you remember and becomes something you know.
The philosophy underneath all of it is minimum friction.
I built this during residency — the most time-compressed, cognitively loaded environment in medicine. If a system required perfect conditions to maintain, it was going to die. So I engineered for the floor, not the ceiling.
Every habit has a minimum viable version. Not the aspirational version. The version I can execute at 40% capacity after a 10-hour shift.
Daily review: full version is 10 minutes. Floor is 60 seconds — open the doc, read the pearl, close it. Case capture: full version is a linked note with clinical context. Floor is one sentence before I log off the EMR. Spaced review: full version is three cards. Floor is one.
A 60-second rep keeps the chain intact. A skipped rep because you didn't have 10 minutes breaks it. Build for the floor. Let the ceiling take care of itself.
I start as an attending in October.
The incoming attendings around me are doing what I did at the start of training — hoping the knowledge will stick through volume of exposure. Some of it will. Most of it won't.
Eleven years in training taught me one thing the curriculum never covered: knowledge without a retention system is borrowed, not owned. The physicians I most want to be like aren't necessarily the ones who read the most. They're the ones who've built a library they can use — under pressure, on the fly, at 3pm on a Friday when the waiting room is stacked.
That is what a second brain does. It turns clinical encounters into a compounding asset instead of a series of experiences you vaguely remember.
I built mine during the hardest stretch of training. Which is its own proof that it can be done.
The knowledge doesn't have to leave. Build the system to keep it.