Review: the problem with `` xxx '' is that its own action is n't very effective . 
Sentiment: negative

Review: confusing on one level or another , 
Sentiment: negative

Review: is that it is one that allows him to churn out one mediocre movie after another 
Sentiment: negative

Review: 's so simple and precise that anything discordant would topple the balance 
Sentiment: positive


Review: richard pryor mined his personal horrors and came up with a treasure chest of material , but lawrence gives us mostly fool 's gold .