On that one part of your question, the knife and the gun, I'm going to let Peter talk about that, but I do want to talk about the science.
What was recognized in this area, which is not uncommon with many areas as new technologies are developing, is that the science was scant relative to the promise. Most of the science, 80% of the science, comes out of five centres in the United States.
What's going on in those five centres in the United States? They have the magic triad. They have researchers linked with clinical people who are linked with a large test bed where they can actually try this out in big populations. We don't have that. We think we should go down that pathway. Other countries in the world think they need to go down that pathway.