Strength of KP: Timing precision for yes/no horary questions, clarity in significator identification, reproducible rules.
Limitations and criticisms:
Birth Time Dependency: KP horary requires exact birth time to the minute. A 5-minute error can shift house cusps by 1°+, changing sub-lords and leading to wrong answers. For native charts, KP is also sensitive to birth time (more so than Parashara's whole-sign system).
Sub-Lord Table Errors: The original 249-arc table computed by K. Krishnamurti contains rounding errors and some disputed calculations. Different KP software produce slightly different sub-lord arcs (usually within 0.01-0.05°). This matters for horary but is often negligible for natal interpretation.
Over-Reliance on Cuspal Sub-Lord: KP's principle that cuspal sub-lord overrides all else is empirically mixed. Many KP practitioners have found charts where the cuspal sub-lord is malefic for an event, yet the event occurred (because other factors were strong). This suggests the hierarchy, while useful, is not absolute.
Rahu and Ketu Ambiguity: The rule that Rahu/Ketu inherit the significations of planets they occupy is logically sound but empirically contested. Some events predicted by Rahu show Rahu's shadowiness (delay, complication); others show the agented planet's straightforward nature. Practitioners disagree on how to weight Rahu/Ketu.
Missing Predictive Dimensions: KP, focused on timing and yes/no, often neglects the quality or texture of events. Will a marriage be happy or difficult? Will a job be fulfilling? KP significator rules can say the marriage "will happen" but give little insight into its nature. Parashara's Navamsha, divisional charts, and strength analysis (Shadbala) provide texture that KP lacks.
Limited Guidance on Spiritual/Psychological Questions: KP is excellent for practical events (job, money, health diagnosis) but weaker for philosophical questions (spiritual growth, purpose, inner conflict). Jaimini's karaka system and Parashara's Navamsha offer more insight here.
The lesson presents these limitations honestly and advises practitioners: Use KP for horary, event timing, and practical yes/no questions. Use Parashara (or Jaimini) for depth, understanding, and quality of life domains. Integrate both for comprehensive astrology.
The birth-time dependency. KP's resolution is its vulnerability. Sub-lord arcs a few arc-minutes wide mean that an error of minutes in the birth time can change the sub-lord and reverse the verdict. Charts from memory, from family recollection or from a rounded hospital record are rarely accurate enough for confident KP work without rectification.
Questions it does not suit. KP is built to return a verdict on a specific, answerable question. It is poorly suited to describing character, mapping the texture of a whole life, or exploring meaning and purpose. Using it for those is like using a micrometer to measure a field: the instrument is fine, the application is wrong.
The illusion of precision. A system that produces a definite yes or no invites more confidence than the underlying data supports. A clean verdict computed from an uncertain birth time is still uncertain, and stating it cleanly conceals that. This is the most common way KP is misused in practice.
What to do about it. State your assumptions when you give a KP verdict: the birth time you used, whether it was rectified, and the ayanamsa applied. Where the birth time cannot be trusted, use horary instead, or say that the method cannot give a safe answer. Declining to answer is a legitimate result and a mark of competence.