I want to share a story about assumptions. And why you'll fail if you make them. There's a great example from Lean UX author Jeff Gothelf, who worked at a circus during his study, with a human cannonball where they'd made assumptions that had critical consequences. The thing is: at one point or another, assumptions are going to stop being true. And then, you'll fail. Need a great feedback tool? https://upvoty.com (10% off with code 'PCC').