“I can’t remember what I read last week!”

You know how it is. You’re a busy professional. Your industry changes rapidly due to new technology and new threats.

You read widely to ensure your career doesn’t get left behind. You devour news articles, social analysis, Medium stories, pithy Facebook posts, long Twitter threads. You want to know how this affects you tomorrow. 👓

But you can’t remember what you read last week!

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And how can you? The internet is a battleground for our attention! You can’t remember what you’ve read if you don't process it, and you can’t process it when you have Instagram, and Facebook, and chat. 📱

But what if you could?


I created Commoncog to help you with exactly that. 🙏

Every article you read can be highlighted in Commoncog. When you’re done, Commoncog asks you to record your takeaways. 🤔

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Twice a week, you get summaries of your takeaways emailed to you. (You can tell it to stop if you’re done with that particular article.) 📬

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When you want to remember what you’ve learnt, you run a search. 🔍

You may also tag your takeaways with a topic tag, for browsing later. 📖

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Eventually, your collection of links and your takeaways serves as your external brain. You’ll see Commoncog as a log of ideas that you want to remember. 💡

This is why I call Commoncog an idea bookmarking service. 💡📚

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An article with no takeaway is time you’ve just wasted. (Unless you’re reading for fun, that is!)


My name is Cedric. I created Commoncog for myself. This software is how I track ideas for my career growth.

Commoncog’s blog is where I write about building career moats in a world of rapid change. I update it twice a week, and I use Commoncog to track the ideas I write about. Here are the latest posts:

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Commonplace, the Commoncog Blog


The Problems with Deliberate Practice

Have you ever tried putting deliberate practice to practice? If you have, it's likely that you'll have noticed just how difficult it is to apply deliberate practice principles to your career. Anyone that tells you otherwise is lying; here's why.

Putting Mental Models to Practice Part 5: Skill Extraction

Last week we covered a model for expertise called recognition-primed decision making. This week, we talk about how to use that model to build expertise of your own.

Putting Mental Models to Practice Part 4: Expert Decision Making

Experts make decisions in ways that are very, very different from conventional decision science models. This makes expertise a lot more important to good decision making than you might think.

Putting Mental Models to Practice Part 3: Better Trial and Error

Instrumental rationality is the sort of thinking that allows you to achieve your goals. We take a closer look at what decision science says is the 'best' way to pursue this purpose.



You may follow the blog here, if you’d like ideas for finding an edge in your career. 🚨

If you’d like to receive an invite for Commoncog’s beta, sign up here:

Be notified when this launches

Thanks for reading! ❤️

Warmly, Cedric