 First of all, sanitation is super important and it keeps getting neglected. So even when people say water and sanitation, they usually go on to talk about water. The second thing is that the sanitation discussion can get terribly focused on some technology. So you end up with people, it's a bit like religion, you know, I'm in this kind of group, I think this type of approach is the right type of approach. And I'm technology agnostic. I think what I would like to see is engineers, economists, urban planners actually deploying all of the tools that we have in our arsenal to solve the specific problems you find in cities. Cities are much more complicated than those simple narratives suggest. And then the third thing is that sanitation is 85% operational business. The infrastructure investment is the easy part. And the real challenge is to support local authorities to invest in systems and services which they can actually afford to run and then making sure that the money to run them and the management structures and the regulation and the incentives are in place. And that's what we see all over the world. We see infrastructure all over the world that's simply just infrastructure not providing a service. So if I could get just, you know, 10% of the engineers who work in our field to stop applying infrastructure and think more about designing service delivery mechanisms, I think I would have, I could retire and be happy.