The meaning of “should not” in 2 through 5 are intended to be the same as the common usage of the words in 1.
I don’t think there is one common usage of the word “should”.
(ETA: I asked the nearest three people if “volcanoes shouldn’t kill people” is true, false, or neither, assuming that “people shouldn’t kill people” is true or false so moral non-realism wasn’t an issue. One said true, two said neither.)
I don’t think there is one common usage of the word “should”.
(ETA: I asked the nearest three people if “volcanoes shouldn’t kill people” is true, false, or neither, assuming that “people shouldn’t kill people” is true or false so moral non-realism wasn’t an issue. One said true, two said neither.)