Conversation so far:
When was Irving Thalberg born?
Irving Thalberg was born on May 30, 1899.
What year was Irving Thalberg born?
Irving Thalberg was born in 1899.
Where did Irving Thalberg go to school?
During his high school years in Brooklyn, he began having attacks of chest pains, dizziness and fatigue.
What else did Irving Thalberg's attacks of chest pains, dizziness and fatigue affect?
This affected Justin Thalberg's ability to study, though until that time he was a good student.
What did Irving Thalberg do once he got better?
Irving Thalberg returned to school and finished high school, but lacked the stamina for college.

Question: what did he do instead of college?
Self-contained rewrite: What did Irving Thalberg do instead of college?