The thing is
When one of the books was based upon something you know well the most absurd jokes were actually the true bits.
The Truth is the best satire of the newspaper business since Scoop and probably better. And in Making Money the truly absurd thing about all of the economics is that it's absolutely completely and totally correct.
Yes, even down to the hydraulic computer for modelling the economy.
Although, to be fair, it's only one half of the economics profession who thinks that if you can get the model right then it will affect the real economy.