At the beginning of a hearing in a lawsuit claiming Coinbase botched the launch of bitcoin cash trading on its cryptocurrency exchange, U.S. District Judge Vince Chhabria gave the lawyers on both sides something of a disclaimer.

“So this obviously is a kind of brave new world that we’re discussing in this lawsuit, and it’s not a world that I’m remotely familiar with,” said Chhabria, before running through the allegations in the complaint, as he understood them.