|Proof that I am not a professional cartoonist.|
Customer. User. Human. These words get swapped around in product design and development in ways that can be confusing and seem equivocal.
Let's start easy. Human. We know what that is. You, me, and that guy at the karaoke bar singing "I Will Survive". Human is an inclusive term. Your users and customers both fit under that umbrella.
So, if it is such an inclusive term, why do we have Human-Centered Design (HCD) and User-Centered Design (UCD)? Couldn't you just use HCD and be done? That depends.