“If you can’t describe what you are doing as a process,
you don’t know what you’re doing”
W. Edwards Deming

Financial modelling experts

An expert is one who has made all the mistakes which can be made in a very narrow field -Niels Bohr

The approach to modelling that I’m writing about in this book comes from years of modelling badly, and figuring our what doesn’t work. F1F9, the company of which I’m a director, keeps financial model building and financial modelling training courses as closely integrated as possible – so that that the things we learn in one area informs the other.

We aim to foster a company culture where mistakes are shared openly. Its only through our mistakes that we become experts in our field.


  1. In my experience lots of financial firms are afraid of mistake and so they don’t share and people never learn from experience. Maybe that’s why modelling doesn’t improve at those firms.

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