Before anything else, go buy Soulver. It is the app that worked out the notepad calculator idea, it has been on my Mac for years, and it is one of the few paid apps I would buy again without thinking…
I read too much news, badly. A dozen RSS feeds, three "read it later" apps I never went back to, and the creeping sense that the algorithm-driven version of all this was optimizing for someone else's goals, not mine. So…