Agreed! Though I could see how someone could get around the timed aspect by clicking "report this," researching, and canceling the report. Of course, having the option to report--and review the discussion--during the review of the lesson would avoid that.

I guess the idea is to just have a timed practice to see how one's already learnt knowledge fares in a more pressure situation with the clock ticking. I have tried both the non-timed strengthening and the timed ones and have found similar questions in both. When doing the non-timed one, I go through the discussions to get different takes of other users and clarify my own doubts. Or in some cases, have reported issues that I have found in translations. In timed-practice, I just concentrate on getting correct answers with accents and punctuation in the least possible time.