I'm going through the Loophole in Logical Reasoning book now and there are several pages dedicated to the indicator "unless." Loophole specifies that you must make the target of "unless" the necessary condition, and the sufficient condition is "the way things always are." But 7Sage loops "unless" in (with what Loophole would call "either/or") with Group 3 and says you just have to choose either half of the conditional, make it the sufficient condition, and negate it.
Does the extra distinction in Loophole matter? i.e. is 7sage too broad on "unless"?
I am interested! Thank you!