Coming under criticism as well is Williams’ resemblance-based account of general characteristics and property agreement. According to Williams, a fully determinate general color characteristic—say, the shade of red that characterizes this shirt and this chair—-is just the set of all tropes that exactly resemble the red trope of this shirt. Different objects of that “same” shade of red each possess a different trope from this set of exactly similar red tropes. But this analysis seems to generate an infinite regress. If trope t1 is related to trope t2 by resemblance trope r1, t2 is related to trope t3 by resemblance trope r2, and t3 is related to t1 by resemblance trope r3, then these resemblance tropes will also resemble each other, giving rise to further resemblance tropes, and so on. To stop this vicious regress, the objection continues, resemblance must be taken to be a universal (Daly 1997, 150).