It could be said that PPP is an effective way to teach, since it makes planning easy and it can be implemented by relatively inexperienced teachers. However, this is not the same as saying that it is an effective way to learn. Some critics have suggested that it rests on a simplistic view of language learning: language learning often involves more than mechanical practice. In addition, there is a lot of evidence to suggest that learners who do well in the practice phase fail to transfer this ability to the production phase, and –even if they do successfully manage the production phase– they often fail to transfer this ability outside the classroom