Interesting goals you have.  Regarding the categories you have mentioned, tell us more details of what your focuses are.  My scopes of interests are rather encompassing, however, the enthusiasm is geared more towards a particular set of métiers/vocations.  Recently, I revisited my amazement with the abacus, which is claimed to have originated within the regions of the Babylonian empire, probably.  Elsewhere in this discussion,  I noticed your mention of bettering the world, altruism, and technologic advancements, , . Relating to the aforementioned trio