26 REPRESENTATSON: CULTURAL REPRESENTATIONS AND SIGNIFYING PRACTICESeffects. Bul the meaning depends, not on the material quality of íhe sign, butOH its symboMc fanction. l\s because a particular sound or word standsfor,symbolizes or represente a concepí that it can function, in language, as a signaad convey meaniog - or, as the construcíionists say, signify ísign-i-fy).1.5 The language of traffic lightsThe simples! exampie of this point, which is critical fbr an understanding ofhow languages funetion as represeníational sysíems, is the famous trafficlighis exampíe. A teafüc lighí is a machine which produces differentcoloured lights in sequenee. The effect of light of different wavelengths onthe eye - which is a natural and material phenomenon - produces íhesensation of differeBt colours, ISkrar these things certainly do exist in thematerial world. But ií is our cuitare which breaks íhe speetnim of light iníodifferent colours, disíiaguisaes them from one another and aítaches ñames -Red, Green, Yellow, Blue — to them, We use a way of classifying the colourspectruin ío créate colours which are different from one another. Werepresent or symbolize the different colours and cíassify thein according íodiíferest colour-concepís. This is íhe conceptual colour sysíem of ourculture. We say 'our culture' because, of courses other cultures may divide thecolour speeíram differeníly. Whaí's more, they certainly use diíferent actualwords or letters to ideníify different coiours: what we calí 'red', the French cali'rouge' and so on. This is the linguistíc code - íhe one which correlaíes certainwords (signs) wiíh certain colours (concepís), aad tfaus enables us tocommunicaíe about colours to oíher people, using 'the language of colours'.But how do we use this representational or symbolic sysíem to reguláis theíraffic? Colours do not have any 'true' or fixed meaniag in thaí sense. Reddoes noí mean 'Stop' in nature, any more than Green meansr 'Go'. In othersettings, Red may stand for, syroboíize or represent 'Blood' or 'Danger* or"ConuiíiHíism'; and Green may represent 'Ireland' or *The Countryside' or'Envkonmentalism'. Even these meanings can chasge. In íhe 'language ofelecíric plugs', Red used to mean 'the connection wiíh the positive charge'buí íhis was artóírarily and wiíhout explanation changad ío Browní Buí Lhenfor many years the producers of plugs had to attach a slip of paper teliingpeople that the code or convention had changed, otherwise how would íheyknow? Red and Green work in íhe language of traffic lighis because 'Stop' and'Go* are íhe meanings which have been assigned to them in our culture by thecode OF conventions governing íhis language, and this code is widely knownaad alraost universaíly obeyed in our culture and cultures Mee ours - thoughwe can well imagine oíher cultures which did not possess the code, in whichthis language would be a complete myster
this example further helps me understand how powerful our associations can be as a society when thinking or naming things. we gave meaning to the colors red and green in the sense that they mean stop and go, because we associated those colors to colors of importance. it's a given now for everyone to think of those signals because we gave it importance, even though colors don't have definite purposes or definitions in itself.