A good book

Let's say you met someone who has a strong mathematical background, a long history of development of mainly business application software, a perfectly fine understanding of writing SQL queries in practical settings. This person understands that OO languages are somewhat arbitrary, but not particularly convinced that they are evil. Similarly, he is not convinced of the need for writing significant amounts of code in declarative style, nor that the existence of a simple formal mathematical model behind relational databases is necessarily exploitable to produce better software. Let's further say that you could get said person to read one book. What would it be?

(Yes, this is somewhat autobiographical...)

-- 
Chris Smith - Lead Software Developer / Technical Trainer
MindIQ Corporation