The psychology of everyday things ... But we have to understand how a simple thing as a door is so confusing. The function of the door is to either open it ...GetstartedOpeninappSigninGetstartedFollow410KFollowers·Editors'picksReceiveournewsletterPublishastoryAboutGetstartedOpeninappHuman-CenteredDesignThepsychologyofeverydaythingsUsabilityisjustasimportantasaesthetics.RaviAug22,2020·6minreadPhotobyPhilippBerndtonUnsplashIfiwasputinsidethecockpitofamodern-dayaircraft,myinabilitytoperformwellisaquestionwithoutpropertrainingandinterest.Butontheotherside,Ishouldnotbehavinganytroubleinoperatingdoors,lightswitches,waterfaucets,andstovesthethingswhichiinteracteveryday.Butthereareatcertaininstanceswedofacesometroubleopeningdoors.Imeanwesometimespushdoorsthatarerequiredtobepulled,pulldoorsthatneedtobepushedandwalkintothedoorswhichneitherpullnorpushbutaremeantforsliding.Therearesimilartroublesfacedbyothers,whichareunnecessary.Butwehavetounderstandhowasimplethingasadoorissoconfusing.Thefunctionofthedooristoeitheropenitorshutit.Ifiamapproachingthedoorandgetaquestion?Ifineedtopushorpull,leftorright,ifthedoorslidesandonwhichside.Thedoor'sdesignshouldindicatehowitworkswithoutanyneedofsignsandalsowithoutanyTrialanderror.Themostimportantcharacteristicsofgooddesignarediscoverabilityandunderstanding.Discoverabilityisnothingbutisitpossiblethattheusercanfigureoutwhatactionsarepossibleandwhereandhowtoperformthem?Understandingiswhatdoesitmean?Howisthethingtobeused?Whatdoallthedifferentcontrolsandsettingsmeantome?Theabovedoorexampleindicates,whathappensiftheuserisnotabletounderstandanddiscoverhowtooperate.Theobjectordevicecanbeanythingwhichisbeenusedalltherelevantcontrolsshouldcommunicatetheproperwaytooperatefortheuser.Whatactionsarepossible?Whereandhowshouldtheybedone?Withdoorsthatpush,thedesignermustprovidesignalsthatnaturallyindicatewheretopush.Theindicatorswhichhelptheusertooperatemaynotbebuiltbydestroyingtheaestheticsorthelooksofthedevice.Withcomplexdevices,discoverabilityandundersta