I do know that I'm not in that scenario, in the same sense as I know most things, like that next time I flip a coin it won't land on edge.
> if ... you consider that a rational choice, then why shouldn't others also follow it?
But this doesn't affect my reasoning, because whether or not I consider it rational, or whether or not I do it, does not affect whether or not they do it[1]. Along the same lines, I see no problem "cashing in" on other's irrational choices in general, provided that I am not causing or contributing to them making those choices.
[1] It may affect their behavior in future elections however. It is because of effects along these lines that I ultimately think I should vote.
> if ... you consider that a rational choice, then why shouldn't others also follow it?
But this doesn't affect my reasoning, because whether or not I consider it rational, or whether or not I do it, does not affect whether or not they do it[1]. Along the same lines, I see no problem "cashing in" on other's irrational choices in general, provided that I am not causing or contributing to them making those choices.
[1] It may affect their behavior in future elections however. It is because of effects along these lines that I ultimately think I should vote.