2. Go has been played continously for 3,000 years, while other games have come and gone. Why do you think this is? (at most 30 words) 3. Assume that AlphaGo's playing strength during the Lee Sedol match was about 9p, so about that of a 9 dan professional human. Explain why Lee Sedol might have had more difficulty against AlphaGo than if he had played the 9p Ke Jie (then arguably the best human go player). (at most 50 words)