 Suppose for the sake of argument that trustee representatives are significantly more valuable than delegates, and that what makes a representative a trustee rather than a delegate is her large margin of victory. Unfortunately, this does not yet show that the expected benefits of voting exceed the expected costs. Suppose (as in Guerrero 2010: 289) that the distinction between a delegate and trustee lies on a continuum, like difference between bald and hairy. To show voting is rational, one would need to show that the marginal impact of an individual vote, as it moves a candidate a marginal degree from delegate to trustee, is higher than the opportunity cost of voting. If voting costs me $15 worth of time, then, on this theory, it would be rational to vote only if my vote is expected to move my favorite candidate from delegate to trustee by an increment worth at least $15 (Guerrero 2010: 295–297).