Whakarāpopototia te tuhinga:  E hiahiatia ana te mahi kia tino pai ai te whakatakoto i te papa kāri i runga i te huarahi tere me te whakamiharo. Engari kua tohu mai tētahi tohunga pāngarau e kore e taea e ngā pāhekoheko pāhekoheko kāri te whakarite i tētahi kohinga pōturi, ā, he pai te whakarerekē. I whakataurite a Peri Diaconis i nga tikanga whakarereke rereke, ana ko te ahua o te 'riffle shuffle', e pa ana ki te tapahi i te papa ki te haurua me te whakarereke i nga haurua ki a raatau ano, ko te waa tino whai hua - mena he pai te mahi. Panuku ki raro mō te ataata. I whakataurite a Peri Diaconis i nga tikanga whakarereke rereke me te kii ko te whakarereke 'riffle' (whakaahua), e pa ana ki te tapahi i te papa ki te haurua me te whakarereke i nga haurua ki a raatau ano, ko te tino whaihua me te tupono mena he pai te mahi. I roto i tētahi ataata YouTube a Numberphile, i kī te tohunga pāngarau o te Whare Wānanga o Stanford mēnā ka whakamahia e te kaihokohoko he rerenga rerenga, e whitu noa iho ngā wā e meatia ai te tukanga kia pai ai te rerenga. Mēnā he pai tō rātau mahi ki te kāri, ka iti iho i te 30 hēkona te roa o tēnei mahi. Engari ki te whakamahi rātau i tētahi rēhita rēhita, e whai ana i te whakatakoto tere i ngā kāri mai i tētahi ringa ki te nuinga o te papa kāri kei roto i tētahi atu, me mahi rātau i te reira 10,000 ngā wā hei whakatutuki i ngā hua ōrite. He tere tonu tēnei i roto i ngā ringaringa o ngā tohunga, engari he puhoi ake i te tikanga riipera. "He huarahi tuatoru o te whakaranu kāri - e whakamahia ana i roto i ngā whakataetae poker me Monte Carlo - e kīia ana e au ko te whiu", te kōrero a Tākuta Diaconis. I roto i te ataata mō Numberphile, Dr Diaconis whakaritea shuffling kāhua ki te whakamārama i to ratou tōtika (whakaahua) Ki te whakamahi i te kaihokohoko i te shuffle overhand (whakaahua), e ngā tere te kōkuhu i te kōeke o kāri mai i tetahi ringa ki te nuinga o te papa o kāri puritia i roto i te tahi atu, ka hiahia ratou ki te mahi i te reira 10,000 nga wa ki te whakatutuki i ngā hua rite ki te shuffle riffle. Te tikanga RIFLE. Tikanga: Te tapahi i tētahi kete kāri kia rua, ā, ka hohoro te whakakotahi i a rātau ki tētahi. Te whai hua: Ko te kaihokohoko me whakahou i te mahinga e whitu nga wa ki te utu i te putea ka taea tenei i roto i te iti iho i te 30 hēkona. Tikanga OVERHAND. Tikanga: Te whakatakoto tere i ngā wāhanga kāri...
I whakatauritea e tētahi tohunga pāngarau o Te Whare Wānanga o Stanford ngā pūkenga whakaranu. Ko nga kaihokohoko e whakamahi ana i te 'riffle' shuffle me whakahou i te mahinga e whitu nga wa ki te tiki i tetahi putea kaari, e kii ana a Peri Diaconis. Ko tēnei tikanga ko te tapahi i tētahi papa me te whakakotahi i ngā haurua. I te mea ko te'overhand'e hiahiatia ana kia whakahoutia 10,000 nga wa kia whiwhi ai i nga hua kotahi. Ko te tikanga'mooshing' he horoi rānei, kotahi meneti te wā ki te whakarōpū kāri.