I calibrate the std/persistence of shocks then run simulation of the model using code
stoch_simul(orde=1,periods=500). Then I got 500 observations. I find that each time I run this process, it always generates exactly same 500 observations. I am a little confused since all shocks are i.i.d , does that mean in different simulation shocks values are randomly picked and should be different from each other in different simulation?