It’s not exclusive, usability is a duality. At the micro and macro levels. At the micro level you want to watch a couple of individual users and watch whether e

It’s not exclusive, usability is a duality. At the micro and macro levels. At the micro level you want to watch a couple of individual users and watch whether every little thing added to the UI makes sense to them. Whether the product solves their problem. If micro fails, macro will most likely fail. At the macro level you’re tracking higher level metrics like how many users engage with the different parts of the UI, where the fallout is? What is the retention of users, what do power users do differently to new users e.t.c This kind of wholistic view about the product at micro and macro levels gives you a much better understanding about the bottle necks in the product.