I want to know the answer to the following question:
Why did Feynman go through a depression?
All the background I'm provided with is that "His work during this period, which used equations of rotation to express various spinning speeds, proved important to his Nobel Prize–winning work, yet because he felt burned out and had turned his attention to less immediately practical problems, he was surprised by the offers of professorships from other renowned universities.". Is that enough to answer the question?
Answer: no