Show HN: MacMind – A transformer neural network in HyperCard on a 1989 Macintosh
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hammer32
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Show HN: MacMind – A transformer neural network in HyperCard on a 1989 Macintosh.
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And yes, it took a while.MacMind is a complete transformer neural network, embeddings, positional encoding, self-attention, backpropagation, and gradient descent, implemented entirely in HyperTalk, the scripting language Apple shipped with HyperCard in 1987.
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Every line of code is readable inside HyperCard's script editor.
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The model has no formula to follow.
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By training step 193, it was oscillating between 50%, 75%, and 100% accuracy on successive steps, settling into convergence like a ball rolling into a bowl.The whole "intelligence" is 1,216 numbers stored in hidden fields in a HyperCard stack.
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