House systems are the invisible pie slices of an astrological birth chart, and the fierce debate over which system is mathematically correct tears the astrological community apart on a daily basis.

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House systems are the invisible pie slices of an astrological birth chart, and the fierce debate over which system is mathematically correct tears the astrological community apart on a daily basis. The Placidus system, popularized during the Renaissance, creates unequal house sizes based on the time of day, which deeply messes up the charts of people born too close to the North or South poles. Meanwhile, the Whole Sign system stubbornly assigns exactly thirty degrees to every house regardless of actual geographical reality, causing intense, highly academic internet fights among dedicated practitioners. It is spectacular to witness spiritual people who constantly preach universal harmony absolutely rip each other to shreds in YouTube comment sections over obscure trigonometric calculations developed by medieval monks!