but we've been able to fit people in in a way that might surprise you in terms of the leaseholds, the terms of agreement, the kinds of resources they're using out of our facilities, and so on. so it's been very flexible. the other point i'd make is that the citizenship has been good. all our friends, when they heard this, said you're going to regret this. you're going to have g.n.p. violations, people are going to steal your stuff, i.p., blah blah blah. it turned out not that way at all. so i don't know of a company that's been disciplined. i know of a couple of places where we had to tell people not to put their bicycles in the hallway and stuff like that to obey code. but not much at all in that regard. and in fact, i just sort of think of it as a lot of very good citizens, what the experience has been for fibrogen. imming that part of it is important to see because we take certain risks in making the space available. today we have not been exposed or had to pay for taking those risks. in terms of the economic package, we assumed that a fully operating building, where our costs for