The highest voted answer to that question is good and accurate. It's tempting to vote it up and it rather deserves it.
The lowest voted answer is much, much better. It cites each applicable clause in the standard but it's got less than half the points at the time of this writing.
Since votes order the questions and tend to tell the inquirer and other observers which answer the community thought was best...it's hard to give both votes and I'm stuck having to give a vote to the one I think is best, especially since it's so low on the voting block (maybe due to timing, maybe due to lack of understanding...who knows) I don't want to push the other answer even further above it.
So that other answer isn't getting my vote even though I think it's good. If I was able to distribute a "good answer" vote and a "best answer" vote...with the latter counting for two...or just be able to give two for an answer, I think that would encourage me to up-vote more answers.