ann oliva is the ceo of the national alliance to end homelessness. you make of those numbers of that big jump? ,ann: thank you first for having me on your show today. this is such an important topic and we need to make sure that folks are aware of what's happening. we are certainly concerned about these numbers. this is the highest number, as you mentioned, since 2007. and it's across all categories. so what that means to us is that this is a systemic problem and it needs systemic solutions. john: explain that. a systemic problem. what needs to be changed or what needs to be fixed? ann: so what this means is that we have an affordable housing crisis. what the data tells us and what the evidence tells us is that when housing becomes less affordable for pple, homelessness increases. so seeing a 12% jump year over year really should be a wake up call to many folks, including our partners in the federal government, that we need to make investments in affordable housing and services because we know that's what ends homelessness. john: why do you think it