The 8th Symposium was held in London, UK, in October 2022. Following the 7th, we discussed the theme "Technology and Humanity -Part 4: Humans need to apply ever-enhancing AI, including AI for Digital Health, and Quantum Computing, for the good of Society". Due to Covid-19, there was a three-year blank after the 7th meeting in 2019. During this period, in November 2021, we held the 7.5 online mini-symposium as a trailer for the 8th Symposium and invited all scheduled speakers for the 8th session to give short speeches. The 8th meeting was a real, on-site, face-to-face meeting.