He aha te pōrewatanga?

Ko te whakapūmau, e mōhiotia ana ko te whakapūmau pahuka, ko te whakapūmau kohuke rānei, he tikanga whakapai e wehewehe ana i ngā kohuke whai hua mai i ngā kohuke gangue i te atanga hau-wai-totoka mā te whakamahi i ngā rerekētanga o ngā āhuatanga mata o ngā kohuke rerekē i roto i te konganuku. E kiia ana hoki ko te "wehenga ā-mata". Ko tētahi tukanga e whakamahi tika ana, ā-kore rānei i ngā āhuatanga ā-mata hei whakatutuki i te wehenga matūriki i runga i ngā rerekētanga o ngā āhuatanga mata o ngā matūriki kohuke, ka kiia ko te whakapūmau.

Ko ngā āhuatanga mata o ngā kohuke e pā ana ki ngā āhuatanga ā-tinana me te matū o ngā matūriki kohuke, pērā i te mākū o te mata, te utu mata, ngā momo hononga matū, te mākū, me te tauhohenga o ngā ngota mata. He rerekē ngā āhuatanga mata o ngā matūriki kohuke rerekē. Mā te whakamahi i ēnei rerekētanga me te whakamahi i ngā taunekeneke ā-mata, ka taea te whakatutuki i te wehenga me te whakarei ake i ngā kohuke. Nō reira, ko te tukanga whakamānu e uru ana ki te atanga toru-wāhanga hau-wai-totoka.

Ka taea te whakarerekē horihori i ngā āhuatanga o te mata o ngā kohuke hei whakarei ake i ngā rerekētanga i waenga i ngā matūriki kohuke utu nui me ngā matūriki gangue, kia māmā ake ai te wehenga. I roto i te whakapūmau, ka whakamahia ngā matū hei whakarerekē i ngā āhuatanga o te mata o ngā kohuke, hei whakanui ake i ngā rerekētanga o ō rātou āhuatanga mata, hei whakatika, hei whakahaere rānei i tō rātou wai-whakaaro. Ka whakahaeretia e tēnei mahi te whanonga whakapūmau o ngā kohuke kia pai ake ai ngā hua wehenga. Nō reira, ko te tono me te whanaketanga o te hangarau whakapūmau e hono tata ana ki te whanaketanga o ngā matū whakapūmau.

Kāore i rite ki te mātotoru, ki te aukume rānei—ngā āhuatanga kohuke he uaua ake te whakarerekē—ko ngā āhuatanga mata o ngā matūriki kohuke ka taea te whakarerekē ā-hangai kia puta ai ngā rerekētanga i waenga i ngā kohuke kia whai hua ai te wehenga. Nō reira, he whānui te whakamahinga o te whakapūmau i roto i te whakapai ake i ngā kohuke, ā, e kiia ana he tikanga whakapai ake whānui. He tino whai hua, ā, e whakamahia whānuitia ana mō te wehenga o ngā rauemi pai me ngā rauemi tino pai.