I submitted this essay in 2018 (<a href="https://news.ycombinator.com/item?id=16792375" rel="nofollow">https://news.ycombinator.com/item?id=16792375</a>), but it didn't get any traction. As people still appear to enjoy it, and today seems like a slow news day on HN, I'm submitting it once more.<p>If you don't like Medium, here's a link to the same essay on our blog: <a href="https://www.calcapp.net/blog/2018/04/09/launching-after-15-years.html" rel="nofollow">https://www.calcapp.net/blog/2018/04/09/launching-after-15-y...</a>