If you like, in my own work with my teams where sometimes we're stumbling across brand new research problems that the big tech companies do not see and have not yet learned to frame. So, I find one of the most exciting challenges is actually to be constantly on the cutting edge. Looking at these types of problems there's a different cutting edge than the cutting edge of the big tech companies. So, I think some of you will join the big tech companies and that's great. We need more AI in the big companies, in the tech companies,