It wouldn't surprise me if there were some sort of backup system that could be deployed manually. The video also suggested they could drain water into the floor below from where it would flow through pipes to ground level. The video suggested that there will also be a "lifeguard" stationed in the pool.
In any case, this is more about having a show-off design than something people will use other than as a one-off to say that they did it.
In any case, this is more about having a show-off design than something people will use other than as a one-off to say that they did it.