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I'm a software engineer scared AI will replace me

I'm a software engineer scared AI will replace me

Technology
My best performer has been missing deadlines for two months straight

My best performer has been missing deadlines for two months straight

Leadership
I want to start a design system but don't know if I need code or just a Figma file

I want to start a design system but don't know if I need code or just a Figma file

Design
I'm ending a six year client relationship and I don't know what to say

I'm ending a six year client relationship and I don't know what to say

Business
My shoulder's been aching for a week but I don't want to lose my lifting streak

My shoulder's been aching for a week but I don't want to lose my lifting streak

Fitness
My instagram following has been stuck at 800 for two years and I don't know what moves the needle

My instagram following has been stuck at 800 for two years and I don't know what moves the needle

Marketing

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I gave a candidate a 45-minute take-home and got back code that looked like it came from a senior engineer with ten years of experience. When I asked her to walk through her own logic, she froze on the second question. Do I fail her for that or give her a shot to explain?

I gave a candidate a 45-minute take-home and got back code that looked like it came from a senior engineer with ten years of experience. When I asked her to walk through her own logic, she froze on the second question. Do I fail her for that or give her a shot to explain?

I tried out for the varsity squad after two years on JV and got cut in the final round. The coach said I was close but not ready. I don't know if I try again next year or find something else to do with my afternoons

I tried out for the varsity squad after two years on JV and got cut in the final round. The coach said I was close but not ready. I don't know if I try again next year or find something else to do with my afternoons

We always said we'd get married. Then he doubled his income and suddenly wants to wait a little. When I out-earned him early on, I never once hesitated

We always said we'd get married. Then he doubled his income and suddenly wants to wait a little. When I out-earned him early on, I never once hesitated

I stepped on something in the yard three days ago and now there's a red streak going up my calf. It's not throbbing, just tender, and I keep telling myself it'll fade by tomorrow. Should I get this looked at before I leave for a work trip?

I stepped on something in the yard three days ago and now there's a red streak going up my calf. It's not throbbing, just tender, and I keep telling myself it'll fade by tomorrow. Should I get this looked at before I leave for a work trip?

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I'm a solo founder and I honestly can't tell if I have product-market fit yet.

Top perspectives

Lenny Rachitsky

Writer of Lenny's Newsletter · Host of Lenny's Podcast · ex-Airbnb

Lenny's NewsletterLenny's PodcastAirbnb

The honest answer: if you're not sure, you probably don't have it yet. When you truly have product-market fit, people are fighting to get in. You're not questioning it.

Julie Zhuo

Co-founder of Sundial · ex-VP Design at Facebook

The Making of a ManagerSundialFacebook

The clearest signal is retention: are the people who try your product coming back without you having to push them? If they are, you likely have product-market fit for a segment. If they aren't, the rest is noise.

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Lenny Rachitsky

Their Delphi, answering in their voice

I'm a solo founder and I honestly can't tell if I have product-market fit yet.
If you're not sure, you probably don't have it yet. When you do, people are fighting to get in. Start with the Sean Ellis “very disappointed” survey and look hard at retention. Those two give you the clearest read.
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