I loko o ka nohona hou, ua lilo nā niho i hōʻailona o ke olakino a me ka nani, a ke piʻi nei hoʻi ka noi no nā pulupulu niho. I kēia manawa, ʻoi aku ka nui o ka noi makahiki o ka honua no nā pulupulu niho ma mua o 9 biliona, me ka piʻi ʻana o ka makahiki he 10%. He nui ka heluna kanaka o ko mākou ʻāina, a ʻo nā pulupulu niho, he mea pono i ke ola hou, koi nui ʻia. ʻOiai he liʻiliʻi ka pulupulu niho, he huahana nui a maʻalahi i kahi mākeke nui. Ke hoʻomaikaʻi nei ka maikaʻi o ke ola, pēlā ka maikaʻi o nā pulupulu niho. ʻO ka maikaʻi o ka hana ʻana a me ka hana ʻana i nā koi o nā mea hana niho niho olakino kiʻekiʻe i hāpai i ka hoʻomohala ʻana i nā mīkini hoʻololi lauoho lauoho kiʻekiʻe.
I ka wā ma mua, ua hoʻohana ka hapa nui o nā mea hana pulupulu niho i ka hōʻailona like o ka microcontroller control system a me ka ʻōnaehana uila uila servo motor, a ʻo ka hapa nui o nā ʻōnaehana servo i lawe ʻia mai Iapana. Ke hilinaʻi nei i kāna hana maikaʻi loa a me ka uku hoʻokūkū hoʻokūkū, ke hoʻonui nei kā mākou ʻoihana i ka ʻoihana mīkini hoʻololi lauoho lauoho lauoho kiʻekiʻe i kēlā me kēia makahiki.