justice harry blackman, the author of roe, came up with as a measure that he sort of pulled out of the air in order to accommodate the competing interests and then flashing forward to casey, in casey what hadn't even been argued in roe suddenly became the central feature of roe. and i think what roberts was underscoring here is that this whole thing has been built on really a very, very shaky, almost non-existent foundation, which does on one hand you would say maybe that means you should toss the whole thing. but i agree with john that where roberts seemed to be heading was to say look, we have a very narrow question before us here. much more narrow than the parties seem to be arguing. is 15 weeks an okay regulation? >> harris: or is any an okay