• Farashin don tunani ne kuma ana iya canzawa a kowane zance.
• Ba a samar da samfuran marufi; Ana raba ra'ayoyin don amsawa kafin samarwa.

Muna ba da nau'i-nau'i na kayan takalma na takalma, ciki har da zaɓuɓɓuka masu ɗorewa don saduwa da nau'o'in muhalli da abubuwan da ake so.