[pdpi]

> This is an NES emulator that is built in Rust, and it uses Rust because I wanted to learn Rust

Arguably, in this scenario, learning rust is the "business need" and the NES emulator is the tool :)

But yeah, exactly. A blockchain is, technically, just a content-addressable linked list. A Merkle tree is the same, as a tree. Git's core data structure is a DAG version of this. These things are useful. Yet nobody calls Git "blockchain technology", because what we all care about is Git's value as a version control tool.