Video narration
Jab aap debit card se coffee lete hain, dukaan aapki screen par dikhte ankon ke badle asli coffee kyun deti hai? Coffee ki keemat usi mudra mein hoti hai jo baaki cheezon ke daam batati hai; isse aap keemat samajhkar doosri cheezon se tulna karte hain. Card aapke khaate tak pahunchne ka zariya hai: bhugtaan ki prakriya mein bank aapke khaate ka balance ghataate hain aur dukandaar ke khaate mein rakam darj hoti hai. Par screen khud moolyavaan nahi hai. Woh bank mein aapke naam ki rakam dikhaati hai - bank us rakam ka bhugtaan karne ka vaada karta hai. Bhugtaan vyavastha aur sabki sveekriti ka bharosa ise kharch karne laayak banaate hain. Daam badlein, to wahi balance kam ya zyaada coffee khareedta hai. Dukaan coffee isliye deti hai ki aapka bank us balance se bhugtaan karega, aur dukandaar ko bharosa hai ki doosre bhi yahi mudra sveekarenge - screen ke kaaran nahi.