It’s worth noting explicitly here that the zero-point isn’t global.
That is, if you are operating at +10 politeness relative to my baseline as a listener, I may be unable to figure out that your “excruciating polite” disapproval is actually disapproval; but the exact same behavior might communicate perfectly clearly to someone else whose baseline is 8 (relative to whom you would be operating at +2) and might be so rude as to inhibit clear communication for Sam down the street, whose baseline is 17 (relative to whom you would be operating at −7).
It’s worth noting explicitly here that the zero-point isn’t global.
That is, if you are operating at +10 politeness relative to my baseline as a listener, I may be unable to figure out that your “excruciating polite” disapproval is actually disapproval; but the exact same behavior might communicate perfectly clearly to someone else whose baseline is 8 (relative to whom you would be operating at +2) and might be so rude as to inhibit clear communication for Sam down the street, whose baseline is 17 (relative to whom you would be operating at −7).