Source
Lenny's Podcast: Product | Career | Growth — Why every company now needs to think and operate like a lab team | Josh Woodward (Google Labs, Gemini, AI Studio) (October 11, 2026) ·
at 14:37 ▸
When this applies
when trying to tell, before meaningful data exists, whether a new offering is resonating
The takeaway
In the earliest stages of validating an idea, trust visceral human reaction over quantitative metrics, because the metrics aren't yet meaningful.
Why it works
Early-stage human reactions (eyes lighting up, leaning in) capture genuine emotional engagement faster and more reliably than nascent usage metrics, which are noisy at low sample sizes.
One level up
Match your evaluation method to the maturity stage of the thing being evaluated — qualitative signal early, quantitative signal at scale.
Where it stops holding
This stops working once a product has scaled (Josh's own '10 to 100' stage) where you need waterfalls, CPAs, and conversion metrics instead of felt reactions.
Detail
rule: When showing early prototypes, watch people's eyes/body language as the primary metric of fit, not dashboards
threshold: Eyes light up / people lean in = signal; polite interest or boredom = false signal
rationale: In early days, product-market fit is 'more art than science' and classic metrics (DAU/MAU, D7 retention) don't exist yet or aren't meaningful.
In their words
It is not a DAO, it's not a DAO over a MAO, it's not a D7 retention, it's none of that. It's literally like, hey, like, Lenny, did you see this? What do you think about this? And, like, if your eyes kind of light up, if you lean in, these are the kind of signals you're looking for.