Your date of birth could already tell enough and a lot about yourself, aspopular astrologies say
WHY
Possibly, the more minimal data that can produce the more relationalities (whether you consider them reliable or not) is a date of birth interpreted by different popular astrological ontologies (zodiacal, mayan, etc…).
Different astrologies have different ontologies and vocabularies. There is not a more perfect astrology than another. Everyone, with his-her own cultural background, will tend to prefer some over another. Nevertheless, bridges and remixes between them will be very useful for many people and mommentums.
WHAT
There are some common estructures and keywords that can be translated from one astrology to another. Also, since all their vocabularies tend to be very abstract, they could also be approximately sinonimized with more custom and practical – landed vocabularies, i.e. tasks making categories, so providing the feature of «do task A, B, C (as the very neutral-objective and popular astrological remix says) and get rewarded with X, Y, Z»
HOW
Related projects: CivilX, Genekeys, MarySoliris bridging Tzolkin calendar and Hexagrams from Iching, etc
Proposed newname: OpenAstro