OK - cards on the table - I want this future to be the truth. It suits me as a business person and as a mathematician. The examples are great but they only show what can be done. They don't prove that it should be done for every business.
For me - books like this always miss out on "meta" analysis - showing trends across the entire FTSE100 / NASDAQ500. This is for good reason (the data is impossible to get) - however that's what is really needed.
Why 4 stars - well it is well written, approachable and a great primer. On the flip side, it didn't give a compelling reason to tell others about it.