Notes on wanting to be a polymath in an age of specialists
Football, neuroscience, LangGraph, writing, swimming. The advice says pick one. Here is why I think the advice is slightly wrong.
The careers advice is consistent. Specialise. Go deep. Be the person who knows one thing better than anyone in the room. It is good advice for a lot of people, and I understand why it exists. Depth is legible. Depth gets hired.
But I keep noticing that the problems I actually enjoy solving sit between fields, and the people who solve them well are the ones who can carry an idea across a border without losing it.
What a polymath actually is
I do not mean knowing a little about everything. That is a dinner-party skill. I mean being genuinely competent in several unrelated areas, competent enough to notice when a tool from one applies to another. Leonardo drew anatomy because he wanted to paint bodies that were correct. The anatomy was not a hobby; it was infrastructure for the painting.
For me, the infrastructure looks like this. Neuroscience and psychology are how I think about agents and about the people who use them. Writing is how I check whether I understood something, because a confused paragraph is a confused idea. Football and badminton and swimming are how I keep the machine running, and they have taught me more about positioning and pressure than any team offsite. Leadership is what happens when you can explain the thing you built to someone who did not build it.
The fields do not compete for time. They pay each other.
The honest cost
There is a cost, and I do not want to pretend otherwise. I will not be the world's best at any one of these things. Someone who only does retrieval systems will know retrieval systems better than I do. That is fine. My bet is that the interesting work over the next decade is integration work: getting an agent to talk to a sales team, getting a research pipeline to produce something a human can act on, getting a real-estate lead to trust a message from a machine. That work needs range as much as depth.
How I actually do it
Not by spreading thin. By rotating focus. Each month has a main thing, and the main thing gets the mornings. The rest gets the gaps. Right now the main thing is agents in production. The gaps are a neuroscience textbook, a notebook of essay drafts, and Sunday football. Last year the main thing was full-stack, and the gaps were AWS and a blockchain I built to understand what a blockchain is.
The word polymath sounds grand. What it means day to day is refusing to let one field become the only lens, and staying curious enough to keep picking up wrenches that were not made for the job. Life rewards action, and it seems to reward action from several directions at once.