The language faculty has always raised a great deal of interest in the scientific community, stemming from the importance of this function in unravelling the mystery of what makes us human beings. Language, however, irrespective of evolutionary considerations, is not a uniform entity. It is not, for example, simply the capacity to memorize lists of words; indeed, this is something that some animals are able to do surprisingly well. It also involves the knowledge of implicit rules that regulate the way in which words must be combined or transformed to be fitted into a sentence for the purpose of conveying a specific message.
