Excel Copilot “one-shotted” a tiny GPT-style language model inside a spreadsheet:
embeddings, causal attention, SGD training, next-token prediction… plus a live slider to watch it learn.
- The medium is the message: spreadsheets are a runtime
- Artifacts like this are auditable (you can inspect the math)
- Reinforces the trend: agent outputs are shifting toward self-contained deliverables
