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Cat Wu

Published podcast speaker

Claims
26
Episodes
1
Shows
1
Named items
2

Books, apps, and tools

The evidenced stack.

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app / likes

Slack

“Yeah, and I also love how easy they've made to customize it. And so we love making Slack bots and this kind of like hackability means that we're able to integrate with Slack the way that we want to.”

Lenny's Podcast · 23 Apr 2026

Evidence receipt · Source ↗

book / likes

Paper Menagerie

“I really like how Asia works. It's a story about economic development and what are the policies and governments that make long-lasting, successful economies. The other books that I'm really into are The Technology Trap. So this is actually about the past few technology revolutions, so the Industrial Revolution and the Computer Revolution, and how this has affected workers. The reason that I really like this is because I think there's a lot we can learn from history to make sure that this transition goes well. And maybe on like a fun note, I really like Paper Menagerie. It's just like a book of short stories about like coming of age and AI and just like self-discovery.”

Lenny's Podcast · 23 Apr 2026

Evidence receipt · Source ↗

Claim ledger

What Cat said.

26 transcript-backed records

01 / recommendation

Likes Paper Menagerie.

“I really like how Asia works. It's a story about economic development and what are the policies and governments that make long-lasting, successful economies. The other books that I'm really into are The Technology Trap. So this is actually about the past few technology revolutions, so the Industrial Revolution and the Computer Revolution, and how this has affected workers. The reason that I really like this is because I think there's a lot we can learn from history to make sure that this transition goes well. And maybe on like a fun note, I really like Paper Menagerie. It's just like a book of short stories about like coming of age and AI and just like self-discovery.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

04 / commitment

The kinds of moves he's doing on the wall are things that, like, I don't think I will ever be able to do in my lifetime if it were set in a gym, like, one feet off the ground.

“The kinds of moves he's doing on the wall are things that, like, I don't think I will ever be able to do in my lifetime if it were set in a gym, like, one feet off the ground.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

05 / belief

We think about this in terms of building blocks. So... For both Cloud Code and Co-Work, the core building block is making individual tasks successful.

“We think about this in terms of building blocks. So... For both Cloud Code and Co-Work, the core building block is making individual tasks successful.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

06 / belief

Just do things. I think there's a lot of value in first principles thinking. And if you know what you're optimizing for and you have strong first principles, then you can normally deduce what the right course of action is and be able to clearly articulate that to all the stakeholders.

“Just do things. I think there's a lot of value in first principles thinking. And if you know what you're optimizing for and you have strong first principles, then you can normally deduce what the right course of action is and be able to clearly articulate that to all the stakeholders.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

08 / evaluation

Like sometimes I see users trying to automate something, getting it to like 90, 95% accuracy, and then giving up on it. And this, if an automation doesn't work 100% of the time, it's not really an automation.

“Like sometimes I see users trying to automate something, getting it to like 90, 95% accuracy, and then giving up on it. And this, if an automation doesn't work 100% of the time, it's not really an automation.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

12 / belief

All these tasks produce outputs that are non-code and co-work is best positioned for that. So the way that I split the products in my mind is if I'm building something where the output is code, I'll use cloud code or desktop or cloud code on mobile.

“All these tasks produce outputs that are non-code and co-work is best positioned for that. So the way that I split the products in my mind is if I'm building something where the output is code, I'll use cloud code or desktop or cloud code on mobile.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

13 / belief

I think we also tend to hire people who have been in the industry for a while and have experienced lots of ups and downs and have a good sense for what gives them energy and how to maintain their energy over time.

“I think we also tend to hire people who have been in the industry for a while and have experienced lots of ups and downs and have a good sense for what gives them energy and how to maintain their energy over time.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

14 / belief

Oh, we actually do PRDs sometimes. So I think for features that are like particularly ambiguous, it does help to write out just a one pager on what the goals are, what the delightful use cases are, what the failure modes currently are that we need to fix.

“Oh, we actually do PRDs sometimes. So I think for features that are like particularly ambiguous, it does help to write out just a one pager on what the goals are, what the delightful use cases are, what the failure modes currently are that we need to fix.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

16 / belief

I think the model doesn't always have a great sense of who all the stakeholders are, how they relate to each other, what their preferences are, what are the right venues to communicate with them, to keep them on board.

“I think the model doesn't always have a great sense of who all the stakeholders are, how they relate to each other, what their preferences are, what are the right venues to communicate with them, to keep them on board.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

17 / belief

I think the reason why an engineering background is particularly useful, at least for the next few months, is if you have an engineering background, you have a better sense for how hard something should be.

“I think the reason why an engineering background is particularly useful, at least for the next few months, is if you have an engineering background, you have a better sense for how hard something should be.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

18 / recommendation

We also are working on making the flow for customizing these commands a lot easier. Because right now, I think you have to know too many concepts.

“We also are working on making the flow for customizing these commands a lot easier. Because right now, I think you have to know too many concepts.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

19 / evaluation

is important for helping the team quantify what the goal is and what their progress towards it is and what they're missing. And so I think evals is this like underappreciated thing that more PMs, more engineers should be working on.

“is important for helping the team quantify what the goal is and what their progress towards it is and what they're missing. And so I think evals is this like underappreciated thing that more PMs, more engineers should be working on.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

20 / preference

I think the importance of evals varies a bit based on the feature that you're working on and or like what the problem you're trying to solve is.

“I think the importance of evals varies a bit based on the feature that you're working on and or like what the problem you're trying to solve is.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

21 / commitment

we tried to build a code review product a few times and we've launched like simple versions of code review which is the slash code review command in the past and it was only with the most recent models that we felt like okay this code review is so good that our engineering team relies on this code review to pass before we merge prs and we found that this was We've always dreamed of Claude being able to be a reliable code reviewer that we can confidently feel catches the majority of bugs.

“we tried to build a code review product a few times and we've launched like simple versions of code review which is the slash code review command in the past and it was only with the most recent models that we felt like okay this code review is so good that our engineering team relies on this code review to pass before we merge prs and we found that this was We've always dreamed of Claude being able to be a reliable code reviewer that we can confidently feel catches the majority of bugs.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

22 / recommendation

Because coworker can only do a great job if it has access to all the context that it needs to be able to curate the output for you. So what that means for me is I connect it to my Google Calendar, I connect it to my Slack, to my Gmail, to my Google Drive, so that it just knows it has the flexibility to find relevant context, to ask questions, to pull in threads, and this substantially improves the quality of the result.

“Because coworker can only do a great job if it has access to all the context that it needs to be able to curate the output for you. So what that means for me is I connect it to my Google Calendar, I connect it to my Slack, to my Gmail, to my Google Drive, so that it just knows it has the flexibility to find relevant context, to ask questions, to pull in threads, and this substantially improves the quality of the result.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

23 / preference

I would really push people towards building apps that you're actually using every single day. Because I think only through that usage are you actually getting the value.

“I would really push people towards building apps that you're actually using every single day. Because I think only through that usage are you actually getting the value.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

24 / evaluation

ambiguous even coding is easier because you can verify the success whereas crafting the character requires a very strong sense of conviction and what who claude should be and i think she has like an incredible ability to not only mold the character but also to like articulate what the goals are what the character what's successful and what's not The other group of people who I really trust is just like the Cloud Code team.

“ambiguous even coding is easier because you can verify the success whereas crafting the character requires a very strong sense of conviction and what who claude should be and i think she has like an incredible ability to not only mold the character but also to like articulate what the goals are what the character what's successful and what's not The other group of people who I really trust is just like the Cloud Code team.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

25 / prediction

will ever be yeah it definitely gets harder like i feel like there are a lot of weeks where maybe sunday night there's some like p0 and then by monday there's like a p00 and by monday afternoon there's a p000 and you're like wow i can't believe i was so worried about that p0 from sunday But I think you just have to acknowledge that there's only so much that you can do that you need to sleep well so that you can make good decisions next day and just like brutally prioritize where you spend your time.

“will ever be yeah it definitely gets harder like i feel like there are a lot of weeks where maybe sunday night there's some like p0 and then by monday there's like a p00 and by monday afternoon there's a p000 and you're like wow i can't believe i was so worried about that p0 from sunday But I think you just have to acknowledge that there's only so much that you can do that you need to sleep well so that you can make good decisions next day and just like brutally prioritize where you spend your time.”
Speaker
Cat Wu
Publisher
Lenny's Podcast

26 / preference

So CLI and desktop both require you to be on your local laptop. And this is contraining because sometimes you're out and about, you're like touching grass, you're going on a walk and you don't have your laptop open and you don't, I can't count the number of people who I've seen like holding their laptop open, like tethered to their phone while they're outside.

“So CLI and desktop both require you to be on your local laptop. And this is contraining because sometimes you're out and about, you're like touching grass, you're going on a walk and you don't have your laptop open and you don't, I can't count the number of people who I've seen like holding their laptop open, like tethered to their phone while they're outside.”
Speaker
Cat Wu
Publisher
Lenny's Podcast
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