Too Long; Didn't Read
Minimum viability is very much a product-outwards perspective: what’s the least amount of work we can do to find out whether going down this line of thinking is a business idea worth being invested in. What makes a product viable for use is: being more usable at each stage of creation. Creating experiences of greater efficacy at every turn. Providing incremental wins at each step that add up to something much greater — a sense of joy. The right way to build a product is to iterate through stages of development. At each stage you deliver something that, on it's own, provides real incremental value.