▁go ▁is ▁more ▁and ▁more ▁un predict able . ▁There ▁is ▁no ▁longer ▁any ▁clear ▁and ▁cons ens ual ▁view ▁of ▁how ▁" person al ▁identity " ▁or ▁" human ▁character " ▁should ▁be ▁defined ▁anyway ▁( other ▁than ▁by ▁identity ▁cards ) ▁and ▁therefore , ▁it ▁is ▁also ▁no ▁longer ▁clear ▁what ▁it ▁means ▁to ▁" mask " ▁them , ▁or ▁what ▁interests ▁that ▁can ▁serve . ▁R oles ▁are ▁constantly ▁being ▁re defined ▁to ▁manipulate ▁power ▁relationships , ▁and ▁sh unt ▁people ▁up ▁or ▁down ▁the ▁hierarchy . ▁ ▁The ▁post mod ern ▁concept ▁of ▁human ▁identity ▁– ▁however ▁it ▁may ▁be ▁the or ized ▁– ▁maxim izes ▁the ▁flex ibility , ▁vari ability ▁and ▁pl astic ity ▁of ▁human ▁behaviour , ▁so ▁that ▁the ▁individual ▁can ▁" be ▁and ▁do ▁many ▁different ▁things , ▁in ▁many ▁different ▁situations ", ▁without ▁any ▁necessary ▁requirement ▁of ▁continu ity ▁between ▁different ▁" act s " ▁in ▁space ▁and ▁time . ▁The ▁effect ▁however ▁is ▁a ▁lack ▁of ▁coh er ence ; ▁it ▁becomes ▁much ▁more ▁difficult ▁to ▁know ▁or ▁define ▁what ▁the ▁identity ▁of ▁someone ▁truly ▁is . ▁As ▁soon ▁as ▁the ▁self ▁is ▁viewed ▁as ▁a ▁performance , ▁mask ing ▁becomes ▁an ▁intr insic ▁aspect ▁of ▁the ▁self , ▁since ▁there ▁still ▁exists ▁an ▁" I " ▁which ▁direct s ▁the ▁performance ▁and ▁which ▁therefore ▁simultaneously ▁" re ve als ▁and ▁conce als " ▁itself . ▁The ▁cor ollary ▁is , ▁that ▁it ▁becomes ▁much ▁more ▁difficult ▁to ▁general ize ▁about ▁human