Context-Sensitive Rule Selection
A default rule should yield when it would defeat the function of the practice. Choose the temporal anchor that preserves the intended experience, not the one that merely matches convention.
When exactly is Diwali? Even communities consulting the same lunar calendar can disagree: some choose the tithi present at sunrise, while others choose the one covering evening—because lamps are meant to be lit in darkness.
E1The purpose chooses the clock
Rules need anchors: sunrise can provide a consistent default for assigning a lunar date, but consistency is not always the decisive goal. When a ritual depends on conditions at a particular moment, that moment can outrank the standard anchor. For Diwali, the relevant condition is the evening pradosh period, when darkness makes the lighting of lamps meaningful.
The reusable model is a hierarchy: first identify the function being served, then locate the moment on which that function depends, and only then select the rule. Convention settles ordinary cases efficiently; context-sensitive selection handles cases where applying the convention would preserve the form while weakening the purpose. This extends the Functional Origins of Ritual lens: the visible rule makes more sense once you recover the work it is meant to do.
E1Purpose does not erase convention
A contextual exception is justified only when the practice has a clearly different decisive moment. The Diwali case shows two defensible anchors—sunrise for the standard rule and evening for lamp-lighting—not permission to discard any rule whenever another interpretation feels preferable.
E1Name the decisive moment
When two rules conflict, write down the function each one preserves and ask whether that function depends on a specific moment or condition. Keep the default unless you can identify a concrete anchor—as evening darkness anchors Diwali lamp-lighting—that the default would miss.
E1Episodes that teach this
-
The Logic of the Hindu Calendar | Future IQ
43,462 views
For Diwali, some communities use the tithi containing the evening pradosh period because the festival is about lighting lamps during darkness, while others use the standard sunrise rule.