I'm an accountant but work consulting as a data/software "engineer" (or in those roles). For a while I got excited by all the "data science" books, until I admitted to myself 2 years ago that without the Math & Stats background, I'm wasting my time.<p>I went back to varsity (part time) this year, studying Applied Maths and Stats. Even with the basics that I now know, going through this book; I can feel that a glass ceiling is broken.<p>I'm going to print it bit by bit, and study its contents (after my exams). Thanks!