[EM] ranked methods

[Markus Schulze]

Hallo,

Case 1: If Mike Ossipoff is an eligible voter, then ROC
is identical to "Random Dictatorship" with Mike Ossipoff
as dictator.

Case 2: If Mike Ossipoff is not an eligible voter, but he
says in advance who his favorite candidate is, then ROC
is identical to "Random Candidate" where Mike's favorite
candidate is chosen with certainty.

Case 3: If Mike Ossipoff is not an eligible voter and he
doesn't say in advance who his favorite candidate is, then
ROC isn't an election method since the winner depends on
more than just the opinions of the voters.

In case 1 and case 2, ROC is a rank method because the
winner doesn't depend on information that is not included
in the individual rankings. In case 3, ROC isn't even an
election method.

Markus Schulze