Ai Weiwei at the Design Museum: “We’re building a society on greed and selfishness”

Ai Weiwei is exasperated. “That’s a design,” he says scathingly, regarding the sleek can of water he’s just been handed, and its baffling variation on a ring-pull.

“It’s very unfamiliar,” he says, turning it up and down and eyeballing its silky pale grey finish. “You have to see what’s going on here, you know, it could be a tear gas bottle. It looks so serious. So unfriendly.”