Continuing the discussion from MC studies more grammar (Peikoff course):
Can you define the difference?
How would you accurately judge the difference?
Do you think you might be motivated to view mistakes as more from “honest” mistakes than from carelessness? If so, how would you account for that potential bias when trying to determine which category an error was in?
Regarding “Italy owes a historic debt to her great sculptors.”, 1) you won’t find the verb “owe” in lists of linking verbs, 2) if “owes” is a linking verb, then “debt” would be the subject complement, but I think that clearly doesn’t make sense. “Debt” isn’t providing more information about “Italy”, it’s the thing Italy owes; compare the relationship there to, for example, “The sky is blue.”