well yeah this is not itself the product, this is a demonstration of the need

Obsidian/etc really isn't it either, though; clearly OP wants to be able to do calculations with this stuff. They want both the knowledge graph AND an executable code environment. (I imagine Emacs can do both.)

But think more broadly. Imagine just

```

import <established knowledge>.anatomy

import <established knowledge>.high_energy_physics

import <established knowledge>.microeconomics

...

```

into a notebook-like environment, with good intellisense and completions. But not quite as a programming language—somewhere between that and a wiki.