"Having set up the conflict between § 188.029 and the Roe trimester framework, the plurality summarily discards Roe's analytic core as "unsound in principle and unworkable in practice.'" Ante at 492 U. S. 518, quoting Garcia v. San Antonio Metropolitan Transit Authority, 469 U. S. 528, 469 U. S. 546 (1985). This is so, the plurality claims, because the key elements of the framework do not appear in the text of the Constitution, because the framework more closely resembles a regulatory code than a body of constitutional doctrine, and because, under the framework, the State's interest in potential human life is considered compelling only after viability, when, in fact, that interest is equally compelling throughout pregnancy. Ante at 492 U. S. 519-520. The plurality does not bother to explain these alleged flaws in Roe. Bald assertion masquerades as reasoning. The object, quite clearly, is not to persuade, but to prevail."