In promissory estoppel claims based on domestic services rendered in reliance on a promise to leave property by will, the court must identify the earliest operative promise upon which the claimant actually relied, and compensation should reflect the minimum equity to do justice — which may be substantially less than a proportionate share of the property value. The majority held that vague evidence of earlier statements was insufficient to establish an operative promise where the claimant's own evidence pointed to a later, specific promise as the basis of reliance.
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