Tuhia he whiti kōrero poto i runga i te kaupapa e whai ake nei:  Ka tirohia e te Tangata X ngā tohu o te Tangata Y
Ae ra, anei he rarangi poto: He mōhio a Herschel. Ka tirotirohia e Herschel nga tohu o Hashim ka kitea he paowa kei runga i tona uma, he teitei te mahana.