Earlier quoted context omitted.
SICP is an introductory text, and is usually taught to first-year undergraduates. We don't even know what sort of educational background this friend has, but if he can do algebra, then he'll be able to do the exercises in the first chapter and check his answers. Furthermore, because Scheme uses the substitution model, doing the exercises on paper is possible. It'll take care and attention to detail, but every Scheme…
SICP is perfect for studying without a computer. I've done it that way and it was a great experience. However, while it is presented as an introductory textbook, it moves fast . It depends on the learner.
It's probably safe say that it's more concise than others that I have read. A sentence in SICP could become a paragraph in a lesser book.