@Bober_smart: I still don't understand why everyone is not using this yet. Thanks to it, a year ago I increased my income to 17,000 d…

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Summary

A viral tweet describes a method to create a 'second brain' by using Claude Code with Obsidian to ingest and manage knowledge sources, based on an idea from Andrey Karpathy.

I still don't understand why everyone is not using this yet. Thanks to it, a year ago I increased my income to 17,000 dollars a month Andrey Karpathy, co-founder of OpenAI, published a simple idea that got 16 million views: stop using AI to write code, use it to build a second brain You point Claude Code to a folder, drop any source in there (an article, transcript, PDF) and Claude reads it, links it, and saves it into a living wiki of everything you know. It compounds like interest: the more you feed it, the smarter it gets Here is the gist: Install Obsidian, create a vault, open it in Claude Code Paste the file with Karpathy's wiki idea and tell Claude to build it Claude creates three folders: raw for sources, wiki for its pages, CLAUDE which runs everything Drop any source into raw and say "ingest this" Ask questions across everything, forever Five minutes to set up, and you never start with an empty chat again The full step-by-step guide is in the article. Save to bookmarks
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Cached at: 08/22/26, 03:19 AM

I still don’t understand why everyone is not using this yet. Thanks to it, a year ago I increased my income to 17,000 dollars a month

Andrey Karpathy, co-founder of OpenAI, published a simple idea that got 16 million views: stop using AI to write code, use it to build a second brain

You point Claude Code to a folder, drop any source in there (an article, transcript, PDF) and Claude reads it, links it, and saves it into a living wiki of everything you know. It compounds like interest: the more you feed it, the smarter it gets

Here is the gist:

Install Obsidian, create a vault, open it in Claude Code

Paste the file with Karpathy’s wiki idea and tell Claude to build it

Claude creates three folders: raw for sources, wiki for its pages, CLAUDE which runs everything

Drop any source into raw and say “ingest this”

Ask questions across everything, forever

Five minutes to set up, and you never start with an empty chat again

The full step-by-step guide is in the article. Save to bookmarks

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