About five months ago, I bought a copy of Camel II to replace the very aged Pink Camel purchased years ago. A couple of month later, Camel III was released. I'm loathe to buy a new edition so quickly -- just like I was loathe to update my Knuth when the new editions were released a year after I got the old ones.

What am I missing in the new Camel? I know it's 400 pages more, but (briefly!) what's on those 400 pages that isn't in Camel II? How changed is the original 600 pages?

I'm trying to convince myself that it really is worth the $40 to Amazon.com to get the new edition, but I'm going to need some convincing.

So, why is Camel III worth $40 to someone who has Camel II?