Erie Railroad v. Tompkins · ¶12

Second. Experience in applying the doctrine of Swift v. Tyson, had revealed its defects, political and social; and the benefits expected to flow from the rule did not accrue. Persistence of state courts in their own opinions on questions of common law prevented uniformity; and the. impossibility of discovering a satisfactory line of demarcation between the province of general law and that of local law developed a new well of uncertainties.

U. S. Reports, bound volume
U. S. Reports, volume 304, at 64 (Library of Congress) · transcription: Caselaw Access Project
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