mr. gladstone, perhaps you could go through that with us, why that doesn't work. and rdt is here to instruct us in terms of what the rules they need to apply for everybody else, at least we can form our own judgment, but i'd like it to be taken apart -- >> yes. sf govtv, please. >> thank you. if i heard you right, commissioner, you asked me to address the effects of this not cutting back 4'6", and i wanted to explain. so this stair, the top portion of this stair is here, the bottom is here. so we looked at this. if we cut this out, i asked the client, what if we take the -- a quarter, eliminate this -- the depth of this bathroom -- a portion of this bathroom would now be a corridor to take you from here to the stair or from here to the stair, but it was pointed out to me that there's a drop from where the toilet is, the elevation there, to that of about 9 feet. to put a corridor there, as opposed to keeping the corridor here, we'd have to reverse the stair, where this is the top of the stair and this is the bottom level of the stair. that would cause a reversal of