I think I saw something about WK accepting answers that would match the correct meaning with up to three changes. So since “next month” and “last month” only differ by three letters, it would only need three changes to make it correct, so it marked it as correct since it was apparently close enough. Very amusing in this case that the answer was so opposite in meaning from what it should have been, though.
I ran into the same issue with big voice and low voice. Send it to Viet and i’m sure they will take action to change it, Normally the coding does just fine, its when it runs into these cases it has issues.
Well, Levenshtein distance is almost the same as number of wrong letters, so probably it’s something more complex, like (Levenshtein distance / length of the correct answer).
we’ll probably create a manual blacklist for similar words that can be marked correct (older sister, younger sister, for example), but it’s a little ways down the list. For now, just uh… tank yourself the next time you see it if you accidentally get it right by putting in the wrong thing. It’s good for you, I promise