Both. Well, I think focussed individuals with 1 area of expertise are fine. But you need someone who is at least a a very good computer scientist, has some form

Both. Well, I think focussed individuals with 1 area of expertise are fine. But you need someone who is at least a a very good computer scientist, has some formal background in probability theory and ideally grasps genetics quite well (which is far from trivial as it's a moving target).