Hii ni theory yangu nimeiwaza kichwani, sijajua kama ina efficiency ya walau asilimia 98% ya kutoa accurate results:
Mfano umempenda mdada ambaye unaishi naye mtaa mmoja, college moja, darasa moja n.k mchunguze anapenda kinywaji gani especially soda za take away, mfano mdada anapenda Kunywa sprite, siku unaongea naye wewe nunua take away ya sprite, uinywe mbele yake halafu umpe chupa hiyo hiyo naye ainywe, au muulize umnunulie soda gani akisema sprite, nunua sprite moja, ipige tarumbeta hapo mbele yake halafu umpe anywe. Mdada hatojua kuwa unampima
Akikataa kushea chupa ya soda na wewe, kwa gia ya kwamba umnunulie mpya, jua hauna mtu hapo..ukitongoza utakataliwa.