"Hard and social science will of course progress even though the Supreme Court averts its eyes. It takes no expert prognosticator to know that research on women's mental and physical health following abortion will yield an eventual medical consensus, and neonatal science will push the frontiers of fetal "viability" ever closer to the date of conception. One may fervently hope that the Court will someday acknowledge such developments and re-evaluate Roe and Casey accordingly. That the Court's constitutional decision making leaves our nation in a position of willful blindness to evolving knowledge should trouble any dispassionate observer not only about the abortion decisions, but about a number of other areas in which the Court unhesitatingly steps into the realm of social policy under the guise of constitutional adjudication."