A simple app was discussed recently: https://news.ycombinator.com/item?id=42165849 https://news.ycombinator.com/item?id=42165849 Although it's not about a magi

A simple app was discussed recently: https://news.ycombinator.com/item?id=42165849 https://news.ycombinator.com/item?id=42165849 Although it's not about a magical device but about practice.