Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mediocre

My Spanish is pretty good but I got the course to try to increase my fluency. I used just the cassettes while biking.On the positive side, the quality of the sound is excellent.On the negative side, the course is committed to endless seemingly mindless boring substitution drills that seems to have the effect of short-term rote learning. This strikes me like mostly a waste of time. Has any scholar verified that the method really works?The much better approach is Pimsleur's, which consists mostly of back and forth translations (model dialogue, then translation from Spanish to English, then Spanish to English translation of the same dialogue). That seems much, much more useful.So I say: go with the Pimsleur method.