Conversation so far:
When did Richard Stallman go to Harvard University?
As a first-year student at Harvard University in fall 1970, Richard Stallman was known for his strong performance in Math 55.
What did Richard Stallman study at Harvard University?
Richard Stallman received a bachelor's degree in physics from Harvard in 1974.

Question: When did he go to MIT?
Self-contained rewrite: When did Richard Stallman go to Massachusetts Institute of Technology?