Thank you for taking the time for such a didactical and complete answer. It's exchanges like this that take make HN special. The links are really helpful btw.

Thank you for taking the time for such a didactical and complete answer. It's exchanges like this that take make HN special. The links are really helpful btw. Where do you get your daily news feed? If you have something like 'hacker news for astronomers', or some very active blog, do let know please.