Computer scientist David Chisnall criticizes NeoVim for deleting vim's persistent undo files without upgrading them, destroying years of undo history. He argues the developers showed no duty of care to users by dismissing data loss in a feature explicitly designed for persistence, contrasting this with vim's reliable 20-year track record and Jef Raskin's First Law of humane computing.
Blender Copilot is an AI chat panel that runs inside Blender's Python process, executing model-generated code directly on live scenes with no separate bridge or sidecar. Each interaction wraps in a single undo step, enabling seamless integration with Blender's native tools and context. The project demonstrates five prompts building a spaceship model in a real Blender session.