13-5b2h In the evenly rotating economy, the rates of interest will differ in accordance with a psychic component

In short, Rothbard can explain away everything as due to psychic component.

“The rates of interest will differ in accordance with a “psychic” component, either positive or negative, depending on whether there is an acute dislike or liking among investors for a particular production process.” (p. 443)

Next:

• 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

Related:

• 13-1a3a1a1 Only monetary income (or loss) can be observed and measured ex post—never psychic income (or loss)
• 13-5f The interest rate is determined by the time-preference schedules, rather than vice versa
• 13-9 Man allocates everything so that each unit goes into the use with the highest prospective marginal utility on his value scale—i.e., in accordance with the principle of maximizing his psychic income