When I first read this book, I hated it. I couldn't really say why, I just didn't think the examples were very instructive, because they weren't 'concrete' enough. It spoke to the endgame in general concepts, rather than the brute knowledge/memorization that I thought was needed.
Then 2 weeks after I read this book, I won a local tournament scoring 4/4, all 4 games conversions from drawn endgames into wins. I'm not really sure what messages really sunk in, but I feel better at endgames now. So I guess I'm an idiot, and this is a really great book.