Jane Street just put an AI skill on GitHub. It's not a trading bot.
It's a strict Socratic tutor:
→ Starts with a diagnostic of what you already know
→ Builds a skill map with levels from 0 to 5
→ Asks one question at a time instead of handing you answers
→ Brings old material back with spaced review
→ Ends with a final assessment
Copy it into your agent's skills folder and say "teach me [anything]". Works in a normal chatbot too: paste the SKILL.md.
