How to score the error?

[Nimrod]

The rule specifically addresses a case where the scorer should make that subjective judgment (they're asked to do so all the time, btw). In the case of a play at second, the scorer decides if it was 2B or SS who didn't do the job. That tells me it's not just a person standing there not catching the ball, but a person not covering when they should have.

You might be right. But as I said, ''I'd like to believe.''

I understand that scorekeepers are asked to make subjective judgments. But the rules by nature attempt to limit subjective judgment as much as possible. Asking a scorekeeper to make more judgments about who in the field should've covered what base unnecessarily adds to the subjectivity, IMO, but perhaps this rule is designed to address plays where there isn't much debate, like a stolen base scenario.