I am simply referring to them and we don't have to know anything else about my relation to PhiPhi islands or my or their location but only that there are such islands and in fact we don't even have to know that. In a sense, it is not surprising that generative grammar with its syntactical approach was developed in the English-speaking world because English and for that matter Swedish have relatively poor grammaticalized deictic categories. In some languages one has to learn complicated kinship structures in order to communicate successfully. Thus, in general, one may conclude that languages world wide rely to a great extent on deictic expressions, on the indexical relation between humans and other entities. Thus deixis has the function of relating langauge to the immediate context as well as economy function, i.e., reducing repetition and redundancy in language.
Deictic center is the notion describing the encoded point of view of the speaker.
In this sense, the juxtaposition of these two words results in an impossible movement on the earth - towards the speaker and to another place than the speaker. However, if we shift the deictic center this expression wouldn't be difficult to understand. Many languages have grammicalized vocatives, morphological inflection for vocatives used only gesturally, that is for calling somebody, getting attention or underlining an argument. These vocatives can be used also for expression of emotional attitude and relation to the addressee, that is, of emphatetic deixis. Time deixis is grammaticalized mainly in the tense system of the particlar language.