Show HN: MacMind – A transformer neural network in HyperCard on a 1989 Macintosh

I trained a transformer in HyperCard. 1,216 parameters. 1989 Macintosh. And yes, it took a while. MacMind is a complete transformer neural network, embeddings, positional encoding, self-attention, backpropagation, and gradient descent, impl

Why it matters: Useful because it points to a real product or platform update, not just general hype.

Useful for: Most useful for builders, product teams, UX people, and anyone tracking practical web and AI shifts.

Different because: Worth opening when the release changes what teams can actually ship, integrate, or test soon.