by Evan Armstrong in Napkin Math DALL-E/Every illustration.Was this newsletter forwarded to you? Sign up to get it in your inbox. --- When my wife handed me a pregnancy test, a faintly pink cross indicating a positive result, I mostly felt one thing: fear. The kid was planned for, and our marriage was the best it had ever been. By every metric, this was an ideal time for us to grow our family. Still, holding that test, I felt more terrified than elated.To me, that little plastic stick—on...