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You can master some basics of DSGE models as long as you are patient enough, and have a certain level of Mathematics competence. The trouble has never been these simple derivations/optimisations.
The trouble is how to match DSGE models with economic reality. When simple optimisation doesn't work, what changes we should make to improve? That requires both mathmatical and theoretical excellence. Of course, you can always follow the step of the others, but only those with excellent mathmaticaland and theoretical knowledge can break through the ice.
The fact is that we haven't even been able to completely tackle the indentification problem! The very basis of DSGE modelling!
Yes. You have solved the model in a way the book tells you, but then which estimation method would you choose? for what reasons? and how do you make sure you are exempted from identification problem?
My friend, I am afraid you have a long way to go.... keep going. you would see the beauty of it.
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