<human>:  Who was the real life person that the book, ‘The Man Who Knew Infinity’, is based on?
<bot>: The book is based on the life of Srinivasa Ramanujan. He was a mathematician who lived in India in the early 20th century. He was an amazing mathematician, and he was able to prove many famous theorems in mathematics. However, he was never able to publish his work because he was not allowed to leave India. He died in 1920 at the age of 32.