There's an old proverb that says, "Necessity is the mother of invention," but the same could be said about observation. Everyday life affords us endless opportunities to observe our surroundings, from the people we interact with, to the technology and tools that we leverage. None of it's perfect, and all of it can be improved upon-if we pay attention. Observation of our environments and how people interact with them can reveal valuable information that can drive better product decisions and ultimately create better customer experiences.  If you're not already gathering human insights by observing your customers interacting with your products, here are three reasons why this should be a regular part of your product development process: