Economics is "tremendously sophisticated"

From readings for Behavioral Econ class:
Economics is market by a startling crudeness in the way it thinks about individuals and their motivations, yet it builds a huge structure on the basis of these simplistic foundations. Is this naive? No: it is in fact tremendously sophisticated.
- Paul Krugman
I've always found Economics an interesting and mind-stimulating subject to learn about, although lots of people (at least some of my fellow students) tend to think of Economics as useless and an easy major to tag along. After reading what Milton Friedman and Paul Krugman have to say about Economics and theories and hypotheses, I feel content. At least, I didn't study four years in college for nothing, ha.