Sorry, I deleted that without knowing you were composing a reply. Metaphysical. I guess we are at that edge with metaphysics where we know there's a lot out there we don't know and we have to decide if we want to investigate it or not. I suppose it is the same scientifically as well.

We don't want to go build a collider that could create a black hole big enough to envelop the earth, but really, how big is that?