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BrainTube Blog

The BrainTube Blog

Learn together. Share knowledge. Build a knowledge base every AI can query — articles, tutorials and discussions on compiling what you read and watch into searchable knowledge.

Essay

Second Brain vs AI Memory Layer: What Actually Changed

A second brain system organises what you write. An AI memory layer makes what you consume queryable by any model. The difference decides which one you should actually build.

11 min read
Essay

Stop watching videos. Start querying them.

The 60-minute video you bookmarked won't get watched. But the four answers buried in it will get used — if you can pull them on demand.

6 min
Workflow

How to build a second brain from your YouTube history

A practical workflow for turning years of passive watching into a knowledge graph you can actually use.

9 min
Engineering

MCP, and why your personal knowledge graph is suddenly worth something

Model Context Protocol turns your private corpus into a first-class citizen for Claude, Cursor and every agent shipping next year. Here's what that means for the way you save.

8 min
Product

What we mean by 'personal' AI

The phrase gets used loosely. Here's the specific bar we hold ourselves to: your data, your retrieval, your provider, your choice to walk away.

5 min
Essay

I Tried 17 Second Brain Apps. Here's What They All Get Wrong

An editorial autopsy of the second brain app category — the two fatal flaws (manual capture, locked-in AI) and what the category actually needs next.

12 min

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