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← People and their mental models

Polly D'Arcy's mental models

6 claims Polly D'Arcy made fit 5 mental models. Most often: Skin in the game, Compounding, Make it real. Everything they said here.

Models we see in what they say

Our reading: their claim applies the idea without naming it. The claim is theirs; filing it here is ours.

Skin in the game

Trust the judgment of people who pay for being wrong over people who only comment.

Used by 8 others

If the people building a product would not use it with their own money, it is not good enough.

  1. Polly D'Arcy VP of Design at Wealthsimple I really believe that if you as someone who is a sort of maker and owner of the company building this product do not want to use it with your own money, it's not good enough. Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com · 28 Apr 2026 · 4:28 into the videoAll korrents from this video
    I really believe that if you as someone who is a sort of maker and owner of the company building this product do not want to use it with your own money, it's not good enough.

    Watch from 4:28 plays here

    ↗Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com

    28 Apr 2026 · video · 55m · spoken · machine transcript

Using a product with your own money, rather than testing it in staging, lets you very deeply feel its pain points, friction and frustration.

  1. Polly D'Arcy VP of Design at Wealthsimple it's one thing to like test something in staging and it's another thing to actually like use a product with your own money because you just you like are going to like very deeply feel the the pain points and the friction and and the frustration. Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com · 28 Apr 2026 · 5:43 into the videoAll korrents from this video
    it's one thing to like test something in staging and it's another thing to actually like use a product with your own money because you just you like are going to like very deeply feel the the pain points and the friction and and the frustration.

    Watch from 5:43 plays here

    ↗Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com

    28 Apr 2026 · video · 55m · spoken · machine transcript

Compounding

Small gains that build on themselves beat big one-off wins; so do small losses.

Used by 18 others

In a financial product, small UI bugs really do matter because over time they are paper cuts that wear down trust.

  1. Polly D'Arcy VP of Design at Wealthsimple if you open our app and you see a bug and you feel like it's janky then you're like I don't trust these people with my money. That framing has like really helped the team I think level up and realize that like oh these like small UI bugs really do matter because over time they're paper cuts and they wear down that trust battery Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com · 28 Apr 2026 · 15:13 into the videoAll korrents from this video
    if you open our app and you see a bug and you feel like it's janky then you're like I don't trust these people with my money. That framing has like really helped the team I think level up and realize that like oh these like small UI bugs really do matter because over time they're paper cuts and they wear down that trust battery

    Watch from 15:13 plays here

    ↗Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com

    28 Apr 2026 · video · 55m · spoken · machine transcript

Make it real

Build a prototype; it settles arguments a description cannot.

Used by 25 others

Teams can't be debating in pixels in Figma; most often it is better to bias towards building something to make sure it works.

  1. Polly D'Arcy VP of Design at Wealthsimple we can't be debating in pixels in Figma, which already I know seemed like pretty archaic given everyone's clouding everything. Everyone has like their fleet of cloud interns. We really like want to I think most often like bias towards building something so that we can just make sure it works Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com · 28 Apr 2026 · 13:00 into the videoAll korrents from this video
    we can't be debating in pixels in Figma, which already I know seemed like pretty archaic given everyone's clouding everything. Everyone has like their fleet of cloud interns. We really like want to I think most often like bias towards building something so that we can just make sure it works

    Watch from 13:00 plays here

    ↗Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com

    28 Apr 2026 · video · 55m · spoken · machine transcript

Specialise and trade

Do what you are relatively best at and trade for the rest (comparative advantage); it holds until power or change breaks it.

Used by 12 others

It is really dangerous to identify a designer's spike and then put them on a part of the product or a team where they can't lean into it.

  1. Polly D'Arcy VP of Design at Wealthsimple I think it's like really dangerous to like identify a spike and then put somebody on a part of the product or a team where they can't actually lean into that thing. Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com · 28 Apr 2026 · 18:50 into the videoAll korrents from this video
    I think it's like really dangerous to like identify a spike and then put somebody on a part of the product or a team where they can't actually lean into that thing.

    Watch from 18:50 plays here

    ↗Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com

    28 Apr 2026 · video · 55m · spoken · machine transcript

Value moves to what stays scarce

When something becomes cheap and plentiful, the value moves to whatever is still rare next to it.

Used by 59 others

When everybody can build anything, it becomes super clear who has great judgment and who doesn't, which is why judgment and taste are being talked about as everyone's spike.

  1. Polly D'Arcy VP of Design at Wealthsimple When everybody can build anything, it becomes super clear who has great judgment and who doesn't. And that's why I think everyone has sort of started to talk about this idea of like judgment and taste being everyone's spike I guess Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com · 28 Apr 2026 · 29:36 into the videoAll korrents from this video
    When everybody can build anything, it becomes super clear who has great judgment and who doesn't. And that's why I think everyone has sort of started to talk about this idea of like judgment and taste being everyone's spike I guess

    Watch from 29:36 plays here

    ↗Polly D'Arcy - Going from IC to VP of Design at Wealthsimpleyoutube.com

    28 Apr 2026 · video · 55m · spoken · machine transcript