English nouns, determiners, countability, specificity

When English speakers use a noun word, they indicate its specificity with a combination/selection of forms, inflections, determiners–forms being the syntax pattern it follows, uncountable or countable one, and specificity being:

generic <> non‑generic (unidentified) <> non‑generic (identified) <=> Proper

Note that forms may be one of subtle differences in meaning or entirely different ones, for example, good part of text‑related words such as letter, note, or text itself. Also note that non‑generic (identified) and Proper sense is not so much apart as can be seen in the example of, the sun, Mother, Central Park.

Mathematic means open to learning (a week of serendipity)

(From a Podcast) Yesterday, I find out what an awesome service to humanity Spotify.com become by hearing the interview of the founder on Freakonomics Radio, and become an instant fun and avid user. (From a promotional email) Then, today through a couple of promotional mail reached in my inbox from Mix.com, I found an article about Bill Gates, and in that article, I get to know the Big History Project, and become an instant follower and learner there. P.S. This week I found out what Micro$ost wanted with Sharepoint as well.