Billionaire Elon Musk hailed China’s engagement on artificial intelligence safety and said he wants to see Beijing partner with Britain and the US on the issue, speaking alongside British Prime Minister Rishi Sunak in London on Thursday.

Musk supported China’s inclusion in the first AI Safety Summit, which was held at Bletchley Park in England and brought together prominent firms and nations to agree on preliminary steps for managing the hazards of cutting-edge AI models.

“If the United States and the UK and China are aligned on safety, then that’s going to be a good thing, because that’s where the leadership is generally,” he said.

Musk, who was in May given royal-like treatment during a visit to China, welcomed that Beijing had participated in AI safety talks at the event.

“Having them here I think was essential, really. If they’re not participants, it’s pointless.”

Sunak interviewed Musk – feted by Britain as a star guest at the two-day summit – on a small stage in a gilded room at London’s Lancaster House, one of the government’s most opulent venues, which is often used for diplomatic functions.

Self-confessed tech geek Sunak said he felt “privileged and excited” to host Musk and used the occasion to make a not-so-subtle investment pitch when the Tesla (TSLA.O) and SpaceX founder said startup firms needed high rewards to take risks in the sector.

“We very much have a tax system that supports that,” Sunak said.

MAGIC GENIE

The eclectic discussion took place in front of an invited audience of dozens of other business leaders, the final event in a two-day summit seen as a big step forward in harnessing AI for good by starting to think about the serious risks it may pose.

Musk and Sunak agreed on the possible need for physical “off-switches” to prevent robots from running out of control in a dangerous way, making reference to “The Terminator” film franchise and other science-fiction films.

“All these movies with the same plot fundamentally all end with the person turning it off,” Sunak said, adding that the importance of physical off switches had formed part of the discussions at the summit earlier in the day.

Musk told Sunak he thought AI was “the most disruptive force in history”, speculating the technology would be able to “do everything” and make employment as we know it today a thing of the past.

“I don’t know if that makes people comfortable or uncomfortable,” he said.

“It’s both good and bad. One of the challenges in the future will be, how do we find meaning in life if you have a magic genie that can do everything you want?”