I teach #leanStartup. I practice what I teach. I push entrepreneurs to be bold and try to hold myself accountable to the same standards on my own startups and ideas. I love helping entrepreneurs design and run experiments. @neighborrow taught me that there is a difference between a product that customers should use vs one they would use. @photogether_ showed me how to get from idea to revenue in a day. I travel the world teaching classes, mentoring, running workshops, etc.
If you do not state a spec as a hypothesis, you probably shouldn't build it.
What do you think will happen AFTER you build x, that is the most important question. And when it is tested, "working" means it does what it was expected to do in terms of the customer, not the technology.