and some have the impacts that myriam describes and some just leave. this is what this is attempting to do, and to do it in terms of protection by putting some basic policies in place that will protect the most vulnerable residents from displacement. now san francisco is somewhat unique in that there's already a lot of protection policies that you have on the books in san francisco. and some of the policies put in place are proposed in casa, that would be for communities that don't have any policies at all. and in terms of production and the way of getting at the moderate income housing that you just mentioned is envisioned through streamlining that there would be incentives for developers to build it. so that the funding for affordable housing would be directed specifically to extremely low, very low, and low income housing. it wouldn't be used for moderate income housing because there's such a huge need for the most vulnerable residents who need affordable housing. so it's an attempt to pull all of these things together. but it's based on the assumpt