This post on org design really resonated.

Most companies today are using AI the way you’d use a faster horse — to make the existing structure run a little better. The companies that pull ahead will be the ones willing to ask a harder question: what would we build if we were designing this organization from scratch, today, knowing what AI can do?

We have to seriously rethink the SDLC, design it from scratch in the context of how our own organizations work. It’s not about a global “right” process any more. The question now becomes “How can the humans in our team, at our company, at this point in time, work best together to serve our customers?”

Oh, this is very good. On the classic take that the core characteristic of outstanding engineers is “laziness”:

The problem is that LLMs inherently lack the virtue of laziness. Work costs nothing to an LLM. LLMs do not feel a need to optimize for their own (or anyone’s) future time, and will happily dump more and more onto a layercake of garbage. Left unchecked, LLMs will make systems larger, not better — appealing to perverse vanity metrics, perhaps, but at the cost of everything that matters. As such, LLMs highlight how essential our human laziness is: our finite time forces us to develop crisp abstractions in part because we don’t want to waste our (human!) time on the consequences of clunky ones.

The best engineering is always borne of constraints, and the constraint of our time places limits on the cognitive load of the system that we’re willing to accept. This is what drives us to make the system simpler, despite its essential complexity.

This is exactly why I practice Fear-Driven Development, and why everything I do in code includes multiple versions of asking Claude Code “do we need this?” and “is this adding bloat?”

I love this blog and try not to link to it too much, but this one about how fewer people listen to hip hop was especially great.

So, what’s filled the space hip-hop once dominated? A blend of new arrivals and familiar mainstays. Latin music—led by Bad Bunny—and Asian pop, powered by K-pop acts like BTS, have expanded their global footprint. At the same time, legacy formats are resurging: country is booming, driven in large part by Morgan Wallen, while the loosely defined “alternative” category continues to gain share across the charts.

I particularly love how he tries to avoid causation/correlation errors in his hypotheses. Like this one I hadn’t thought about:

Streaming adoption laggards: Hip-hop uniquely benefited from early streaming adopters in the 2010s. Younger listeners—who were predisposed to the genre—were among the first to embrace platforms like Spotify, giving hip-hop an outsized digital footprint. More recently, late adopters—like country fans, older cohorts, and global audiences—have rebalanced the charts, lifting genres like country and K-pop.

Braintrust makes a good case (apologies for the X.com link…) for rethinking how PMs work on AI products: the eval replaces the PRD.

An eval is a structured, repeatable test that answers one question. Does my AI system do the right thing? You define a set of inputs along with expected outputs, run them through your AI system, and score the results using algorithms or AI judges.

The eval becomes both the spec and the acceptance criteria. The directive to engineering:

“Here is the eval. Make this number go up.”

That’s very different to how most teams work today, but I can definitely see the industry moving this way. Product usage generates signals, observability captures them, and evals turn them into improvement targets. The PM’s job is to define what “good” looks like in code and curate the data that reveals what “bad” looks like.

The PM skills that transfer are the same ones that always mattered — discovering needs and opportunities, and making judgment calls about what to build for business value. The difference is that instead of a document that describes the intent, you have a test suite that encodes it.