I created a model to see how monetary policy reacts with a trade shock. I wanted to do a comparison with a case where we do not have monetary policy and thus the interest rate is stable. I know that in a simple model you cannot simulate that.
I tried that to my model and I see that exists a unit root in that case. I used the qz_criterium so as to solve the problem. My question is if I can trust the graphs associated to this or I should just change the Taylor coefficient to make the comparison I want. (I use a simple Taylor rule)
Thank you for your time,
A lost student.