Since its development by Google DeepMind in London, AlphaGo has made history as the first computer program to defeat a professional Go player without handicaps on a full-sized 19×19 board. This artificial intelligence (AI) milestone was achieved in October 2015 and cemented AlphaGo's position as one of the strongest AI programs in the world.

1. AlphaGo working

AlphaGo has been working well recently, defeating some of the top players in the world. It is a significant accomplishment, as artificial intelligence has long been seen as a threat to humans in games like chess and Go. With alphaGo's success, this may begin to change.

2. AlphaGo can be used to benefit society.

AlphaGo can be used as a tool to help society advance and learn. As artificial intelligence (AI) becomes more advanced, society can use machines to do things that were once impossible. AlphaGo has shown that AI can learn and beat humans at complex tasks. It could lead to the development of AI-powered machines that can assist humans in various ways, such as healthcare, education, or manufacturing. Additionally, as AI continues to develop, it is used to help solve some of the world's most challenging problems, such as climate change or disease.

3. Some possible concerns about alphaGo and its effects on society

Some people are concerned that alphaGo may harm society. Some believe that it will cause people to stop playing games and interacting with each other face-to-face. Others are worried that alphaGo will make people lazy, and they will stop trying to learn new things. 

4. AlphaGo defeated a professional Go player for the first time in history

AlphaGo, an artificially intelligent computer program developed by Google DeepMind, has defeated a professional Go player for the first time in history. The program is designed to learn and play the game of Go by itself and has beat some of the world's best players. On March 9th, 2016, alphaGo took on Fan Hui, a 5-dan European professional Go player, and won 5 out of the six games. This historic victory is a major accomplishment for artificial intelligence and machine learning and has potential implications for other areas such as healthcare and finance.

5. Pros of AlphaGo

AlphaGo has many pros, some of which are:

1. It can calculate many moves ahead, making its decisions more accurate.

2. It can learn from experience, making it better at playing against opponents over time.

3. It can beat top human players, showing that its algorithm is very strong.

6. Cons of AlphaGo

Many people are hailing the success of AlphaGo as a major step forward for artificial intelligence, but there are some potential drawbacks to consider. One issue is that AlphaGo relies on brute-force calculations rather than actual intelligence. It means that it can only beat a human player if it has access to more computing power, which could give an unfair advantage to those with more resources.

Another concern is that the algorithms used by AlphaGo can be easily copied and applied to other fields, such as stock market trading. It could lead to unforeseen consequences and dramatic market fluctuations. Finally, it is unclear how AlphaGo will react in situations not specifically programmed into it. It could lead to unexpected problems and even loss of life if AlphaGo is used in areas like self-driving cars.

Conclusion:

AlphaGo has defeated a professional Go player for the first time in history. While this may seem insignificant to some, it is quite meaningful. This victory demonstrates that machines can do things that were once thought to be the sole province of humans. In addition to its impact on the field of artificial intelligence, alphaGo's victory also stands to benefit society as a whole. That said, there are some potential concerns about alphaGo and its effects on society. One worry is that alphaGo could lead to many people losing their jobs. Another concern is that alphaGo could be used for nefarious purposes, such as cheating in games or committing financial fraud. Despite these concerns, it is clear that alphaGo has tremendous potential benefits for society as a whole and should be embraced accordingly.