Different symbolic systems require different inputs. Keeping those inputs explicit makes a reading more transparent and prevents the interpretation layer from inventing missing facts.
Astrology
A full birth chart normally uses birth date, exact birth time, and birthplace. If birth time is unknown, the Ascendant and houses may be unreliable.
Numerology
Birth-date calculations require the correct date. Name-based calculations require the exact name format defined by the numerology method being used.
Tarot
A Tarot reading needs a defined card draw. Card identity and orientation should be recorded explicitly, while the question and spread positions provide context.
Better inputs do not make symbolic systems scientifically predictive, but they make the internal method more consistent and auditable.