[bquinlan]

When I read that sentence, I assumed that the author meant that the computed hash for an input must be deterministic.

But she doubles-down on the uniqueness claim later:

Each hash is unique but always repeatable The word 'cat' will hash to something that no other word hashes too, but it will always hash to the same thing.

This is such a large misunderstanding of hashing (as well as being obviously impossible) that it is hard to trust the rest of the article.

[analognoise]

This is why I love HN; I either discover a great resource, or know what to avoid and why, and I almost always learn something in the process.