Economics in One Lesson

I've ran across an interesting read called "Economics in one Lesson" by Henry Hazlitt. Here is the lesson: The art of economics consists in looking not merely at the immediate but at the longer effects of any act or policy; it consists in tracing the consequences of that policy not merely for one group but for all groups.

The rest of the book expands on that one lesson touching on subjects such as government subsities, tariffs, unions ect...so far the main point of the book is that every action done in the economy effects many groups, not just one group. This sounds basic, but our government doesn't obey this premise at all. ie more taxes to bail out private companies.