Ford say horse Nielsen say 5 users. Other thinkers say. “Is not an estrict rule for moderate interview” Product design in latam, in their podcast, say, could be more. 5, 10, 15.. Others use unmoderated interview, survey, street…. Etc. Few time and X % for audience, (60%) user, costumer, or no have contact, so ask stakeholders intern like cx departament…. No necesary 5. Think about audience, context, and no only 5. There are peoples who resolve problem and you ask, is the problem solved ? Yes. how do you feeling? Angry. Mad. Or. No. Happy. Nps…