Numbershaveapartinourdailylives.Afterall,welivewithnumbers.Fromtelevisionchannelstocomputers,numbersareusedeverywhere! 　　Afewcenturiesago,peoplestartedtomakeluckynumbers.Thiswasinspiredbypeoplewhowerehavingtroubleintheirlives.However,whenthereareluckynumbers,thereoughttobeunluckynumbers,right?So,peoplestartedtolookforthatparticularnumberand,unluckily,13becamethat“dangerous”number. 　　AccordingtotheChristianreligion,Judaswasthe13thpersonatJesusChrist’slastsupper.AnditwashewhobetrayedJesus.Sonowmanypeopleconsideritveryinauspicioustohave13peoplearoundadinnertable,believingthatif13peoplesitdowntohavedinnertogether,oneofthemwoulddiewithintheyear. 　　InancientTurkey,thenumber13wasnearlyerasedfromthevocabularybecauseofitsmeaningofbadluck;manycitiesintheU.K.andtheU.S.A.donothavea13thstreetora13thavenue,andbuildingsdonothavea13thfloororahousewiththenumber13. 　　Fridaythe13thisthoughttobeextremelyunluckybecauseitisacombinationofanunluckydayandanunluckynumber.Now,peopleavoidholdingaweddingonthatday,somepeopleevenavoiddrivingonFridaythe13th! 　　However,noteveryoneisafraidof13.Somebodyevenlovesit!PopsingerTaylorSwiftdraws“13”onherhandbeforeeveryshow.Shehascrediteditwithmanyofhersuccessesinthelastfewyears.NotonlyisitthedayshewasbornoninDecember1989,butovertheyearsithasbecomesomuchmore.“Iwasbornonthe13th.Iturned13onFridaythe13th.Myfirstalbumwentgoldin13weeks.MyfirstNo.1songhada13-secondintro,”sheexplains.“EverytimeI’vewonanawardI’vebeenseatedineitherthe13thseat,the13throw,the13thsectionorrowM,whichisthe13thletterinthealphabet.” 　　So,is13luckyorunlucky?IgorRadun,aprofessorwhostudieshumanbehaviors,mighthavetheanswer:“Therearenoluckyorunluckynumbers;theyexistonlyinourheads—orintheheadsofsomeofus—andtheymightbecomeluckyorunluckyonlyifwemakethemassuch.”