The exercises are amazing, and they give you a chance not just to grapple with the language but to think about some fascinating problems and in some cases learn new material outside of the text proper. It's assumed that picking up the syntax of the language will be the easy part. Some of them are pretty hard, but they are always more or less direct applications of the ideas discussed in the previous section or two. Relativity is not really in any sense a direct application of addition.

That said, the book is definitely written for those who have an undeniable aesthetic sense for beautiful problems.