[SatvikBeri]

I actually learned Scala from this book, and the only languages I had used in production before were Python and Fortran. I don't think learning the functional subset first made it harder for me to learn the object-oriented and imperative parts later on. Plus, understanding the functional subset gives you a better understanding of many of the internals, such as what `for` comprehensions are actually doing.

Of course, if you just read one book and stop there, I'd agree. But most people will continue learning from tutorials, videos, stackoverflow, etc.

I've also seen several other people learn Scala this way, usually without knowing any functional programming before, and really haven't seen any signs of issues wrt not understanding code written in other styles.