In a recent published paper, Bethmann analyzed a stylised Robinson Crusoe economy, defining the state-like and control-like variables and then introducing the value-function-like function. He claims in the final section, that even if the model can be solved explicitly, but with complicated...

In this paper we define the concept of admissible solution and then provide closed-form solutions for all variables of the model along the transitional dynamics path. We present numerical simulations and compare our results with those obtained through the methods developed by Boucekkine and...