The last two years have presented one of the most significant events in physics in my lifetime, that is, direct detections of gravitational waves and solid observational proof of the source in the most recent event. They are, as far as I am concerned, rather unexpected, and are very exciting to any one. Immediately before the most recent discovery, it seemed a strict embargo was in place for one of my friends, an astronomer. An institution-wide embargo is rather unusual, and it implies how exciting the news would be, and it was, as it turned shortly afterwards.

Here is my bold attempt to make a summary of the story of gravitational waves — what is significant and what is the implication?

Very recently a shocking news hit the headline: one of the best go players in the world lost by 1-4 against a go-playing software. Here is the related history and what I thought of about it.

History of artificial intelligence (AI)

Artificial Intelligence, or AI, has been in people's imagination for ages. One of the most famous and first AIs in novels is HAL 9000 in Arthur C. Clarke's Space Odyssey series, starting from 2001: A Space Odyssey.