自相矛盾(Th bst spar and shild)storytllr: long long ago, thr was a sllr, h took a spar and a shild to th markt, and bgan to sll thm.”sllr: com on, com on, vryon! com hr and hav a look, i hav th bst spar and shild.costmr: wll, thy ar not bad.sllr: no bad? thy ar th bst. hav you sn my spar? it’s th bst in th world , my spar could stab through any shilds.costmr 2: oh, rally? what about your shild. sllr: of cours it’s th bst, too. it can stop any spars in th world.wis fllow：thn&hllip;&hllip; ,what if your spar fights against your shild?sllr: sorry! i forgt my own shild?