One of the end of chapter question in the schwesser book says “the assumption of constant returns to scale implies that the % change in TFP is Zero” - this relates to the explaintion of rearranging the the CD funtion to state the pecentage change in real total economic output.
Seems a bit confusing b/c isn’t TFP one of the variables in the change in real output (ΔA / A)?
Can anyone explain what is meant by this assumption?