Duolingo's small UI switch that changes everything
As Moses Wayne, a senior staff engineer at Duolingo, explains to The Verge: 'We feel like this is a way that we can motivate you to focus on things you're getting right rather than penalizing for the things that you're making mistakes on.'
If you feel like you lack courage, it's not due to a personal fault. Protecting your physical and emotional personal well-being is an innate drive that can override your goals.