บท 1132: Fermi's Paradox and The Great Filter

Although already well into his 70s, mature wasn't the right word to describe the old man. His posture and the habit of looking around reflected the shadow of a 16-year-old teen.

However, Jiang Chen quickly made sense of it. He asked himself if he sat in a while for a few decades, he would probably be more lively.

Just as Jiang Chen examined the old man from behind, Hawking turned his head and teased him.

"So, Mr. President, if you have any questions, please ask me soon. You are an important man making hundreds of thousands of dollars per second. You shouldn't waste too much time on campus."

Jiang Chen laughed without denying the statement. After a moment of thought, he asked.

"3.7 billion years, if you think there are civilizations that existed for 3.7 billion years, what would they develop into?"