Source
Lenny's Podcast: Product | Career | Growth — The design process is dead. Here’s what’s replacing it. | Jenny Wen (head of design at Claude) (March 1, 2026) ·
at 1:13:24 ▸
When this applies
when a person has years of unstructured personal records (notes, journals, meeting logs) and wants to extract implicit patterns or criteria they've never explicitly articulated
The takeaway
Feed years of your own unstructured personal records to an AI agent specifically to surface implicit criteria or self-knowledge you've been applying but never articulated.
Why it works
A long-running agent can read a large unstructured personal corpus and surface implicit patterns (recurring criteria, values) that the person has been applying but never stated explicitly, because humans are bad at introspecting on long accumulated history unaided.
One level up
AI's comparative advantage over humans can be less 'generating new ideas' and more 'synthesizing a person's own scattered past output into legible patterns.'
Where it stops holding
This stops working when the personal records are too sparse or inconsistent to contain a real underlying pattern, producing a fabricated or generic-sounding rubric instead of a genuine one.
Detail
situation: Jenny wanted to articulate what she personally looks for in design craft, something she and many others struggle to state explicitly, and had years of relevant unstructured notes.
decision: She had Cowork read through her interview notes and craft-related memos and asked it to produce a memo/rubric for assessing craft in interviews.
outcome: It produced a usable rubric and surfaced things about her own implicit standards that she 'wouldn't have realized' otherwise.
lesson: Long-running AI agents are well suited to introspective synthesis tasks on a person's own accumulated, unstructured records.
In their words
I just had it read through all of my notes, both like interview notes and other things that I cared about and memos and stuff like that I've written the past. And then it made me this rubric for evaluating that.