Building a Second Brain: the CODE method and how Noodle fits it

Noodle covers the first half of Tiago Forte's method well and the second half only partly. It's very good at getting things in and finding them again, fine at sorting them, and thin on tools for boiling notes down and writing with them.

Forte's book, Building a Second Brain, came out in 2022. Its idea is simple: stop relying on memory for the useful things you come across (the recipe tweak, the line from a talk, the contractor's quote) and keep them in one trusted place, so you can use them later. It's worth reading in full, and Forte Labs has much more. Noodle isn't affiliated with Tiago Forte or Forte Labs in any way.

What the book means by a second brain

A second brain is your own collection of things worth keeping: articles, quotes, photos, voice memos, half-formed ideas. It lives outside your head, usually in an app. Forte cares less about the collection than about what you do with it. You save the grout video in March so that in June, standing in the tile shop, you don't start from nothing.

A note that never helps you make or decide anything isn't doing much. That's the test the book keeps coming back to.

The four steps of CODE

The method has four steps, and the book names them with the letters CODE.

Capture: keep what resonates. Save what strikes you as inspiring, useful, personal or surprising, and let the rest go.
Organize: sort by what you're working on, not by subject. The grout video goes with the kitchen project, not under "Home improvement".
Distill: boil a note down so your future self gets the point in seconds.
Express: use what you saved to make something and share it, even something small.

Each step leans on the one before. You can't distill what you never captured.

Step	What the book asks	What Noodle does	What Noodle doesn't
Capture	Keep what resonates, wherever you find it	Share from any app, the + tab, voice notes, photos, a home-screen widget and quick tiles. It reads what videos, posts, photos and voice notes say	Clip part of a web page, or import from other apps
Organize	Sort by how actionable things are (PARA)	One category per item and up to 10 tags, with suggestions; To organize catches what isn't filed	Folders inside folders, or one item in two categories
Distill	Boil notes down in layers	Your own note on each item, Summarize on long items, answers with sources	Highlighting or bolding the text you saved
Express	Turn what you saved into finished work	Items with several parts as building blocks, Plan it to turn a save into a task, copying text out	A writing space, links between notes, export to documents

Capture is where Noodle is strongest

Capture only works if it's quick and works wherever you are. Noodle was built around that.

In YouTube, Instagram, Chrome, Photos, Files or WhatsApp, tap Share and pick Noodle. The video, post, article, photo, PDF or voice message is saved before you've left the app. On the + tab you can type a thought, add three photos and a link, and tap Done. Tap the mic and your words appear as you speak.

The bigger difference: Noodle reads things for you. It knows what a YouTube video says, the words in an Instagram post's images, an article's text, the numbers on a receipt you photographed and what you said in a voice note. Other languages are translated to English. You save the source, and what's inside it stays findable without you copying anything out.

Organizing in Noodle is simpler than PARA

The book's filing system is PARA: Projects, Areas, Resources and Archives. You sort things by when you'll need them. A note about tile grout belongs to "Kitchen redo" while the kitchen is being redone, and to the archive after.

Noodle gives every item one category and up to 10 tags, plus your own note. When you save something, it suggests a category and tags from what the item is about, and you tap to accept (or let Settings file things automatically). Anything you haven't filed waits in To organize.

That's enough for a light PARA: a category per active project and area, an Archive category, and tags for topics. The catch is that categories are one flat list and an item sits in one category at a time. Details in the PARA method in Noodle.

Perfect filing matters less when search understands you

A lot of filing anxiety comes from one fear: put it in the wrong place and it's gone. Forte pushes back on fussing over the system; on his blog he calls much organizing "procrastination in disguise".

Noodle goes further. Search finds things from a description, even if you use different words from the item. Type "that bread tip for a cold kitchen" and you get the video where someone proves dough in the oven with only the light on. Type "whiteboard" and last Tuesday's meeting photo shows up. It works offline.

So "Kitchen" or "Recipes" stops mattering much. Categories still let you see one project at a glance; they just don't have to be right for you to find things. With Ask Noodle downloaded you can also ask questions about your saves and tap the numbered sources in the answer.

Distilling is the weaker step

The book's technique is Progressive Summarization. Each time you come back to a note, you add a layer: bold the main passages, highlight the best of the bold, then write a short summary in your own words at the top. Notes you use often get quicker to read each time.

Noodle has no highlighting and no bold, so the middle layers don't exist. What you can do instead:

Write the point yourself. Tap the pencil (Edit item) on an item's screen and add a note, like "Proof in the oven with the light on, 2 hours". That's the book's top layer, and search reads it too.
Get a summary. With Ask Noodle downloaded, long items (a lecture, a long article, a PDF report) show Summarize. It's a small assistant on your phone, so its summaries are plainer than big online ones and can be wrong.
Ask a question across everything you've saved and read the answer with its sources.

Expressing needs a writing app alongside Noodle

Express is where the saving pays off: a talk, a family trip plan, a birthday present picked from a year of hints. The book suggests building from intermediate packets, small reusable pieces such as a list of quotes, an outline or a set of photos.

An item built on the + tab can hold a link, a few photos, a voice note and your own text, so it works as one packet. Plan it (under More on an item's screen) puts a task on a day in Plan, linked back to the save. And you can select and copy saved text, or tap Copy on an answer from Ask Noodle.

Three more ideas from the book worth borrowing

Twelve favorite problems. Forte credits this to the physicist Richard Feynman: keep about a dozen open questions you care about and test new ideas against them. It's the best filter we know for what to save.
Divergence and convergence. Creative work swings between gathering options and narrowing down. Your second brain holds the gathering, so you can switch to finishing without losing anything.
The Hemingway Bridge. Named after the writer's habit of stopping while he still knew what came next, it means ending a session with a note to your future self. A task in Plan, linked to the save you were working from, does the job.

You don't need the whole method to use these. Start with the first step: capture what resonates.