13–5b2i The rate of interest will be uniform in the evenly rotating economy only when everyone becomes the same—i.e., when all individuals have identical time-preference schedules, expectations, and subjective valuations

But if everyone is the same, then there is no division of labor. In short, there may be no such thing as natural rate of interest in any meaningful sense—in reality, equilibrium doesn’t exist for interest, either.revisit

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• 13-5b2j There is no natural rate of interest in reality

Related

• The equilibrium in interest rate can be achieved conceptually but not in reality:
  • 5-1b1a2b Anything physical can’t do away with its own contingency
  • 13-1a3a5a The equilibrium price can be achieved conceptually because the demand will dwindle to zero when the price is high enough
• Even conceptually it is somewhat contradictory:revisit
  • 2-1a Information is in the difference. No difference, no information. 情報とは差異. 区別のないところに情報は生まれない.
  • 13-1a3a2a The difference is implied in any exchange and division of labor
  • 13-1a3a3 The equilibrium price implies no further changes (the so-called subjective improvements)

ERE