minimum, it is becoming rapidly difficult to hide behind vague intuition for ethical decisions—“I know it when I see it” (U.S. Supreme Court Justice Potter Stewart, 1964) or the “wisdom of repugnance” (aka “yuck factor,” Leon Kass, 1997), or vague appeals to “common sense.” As we have to deal with minds alien to

minimum, it is becoming rapidly difficult to hide behind vague intuition for ethical decisions—“I know it when I see it” (U.S. Supreme Court Justice Potter Stewart, 1964) or the “wisdom of repugnance” (aka “yuck factor,” Leon Kass, 1997), or vague appeals to “common sense.” As we have to deal with minds alien to

l approach and so we exchanged ideas and drafts. The difficulty of defending an absolutist view was well illustrated by an exchange between Justice Potter Stewart and Professor Bickel. Stewart asked Bickel about “a hypothetical case:” “Let us assume that when the members of the Court go back and open up this s