If I may, we have the same approach with our internal research and whatever research we do. Everything is done as projects with a timeline of about three or four years and all that. But I think what's important is that the scientists keep track of the general direction, and I think they build and try to design a project that will have their answers and a go or no-go type of gate point for the next step; then they will design the next project.
So they're kind of used to having these cycles. It's pretty rare that you get 20-year funding. We just look at four years, or three years, decide whether it's go or no-go; and you have to adjust and carve it a little bit, modify it, get more people involved, maybe, or go in a different direction. And biology gives you surprises too; so you think you have a straight line, but you have a big curve all of a sudden. Biology will do that to you all the time.