D'karr
Adventurer
And yet we need over 500 discrete exception based rules for combat (In just the PHB 1). Why can't the player just attack, and the DM adjudicate what happens outside of the basic damage... whether it's a burst, causes a condition, forces movement, etc.? I mean isn't it just a waste of time to have to look up those powers or through those power cards to research how they work... and really, aren't there arguments, questions, etc. on the 4e rules boards about the minutiae of these powers, keywords, etc. all the time?
If that was the case you would only need a handful of "spells" in 3e. Since spells are the classic discrete exception based rules, and you could adjudicate everything else. But that is not the case. BTW Savage Worlds works a lot like that.
The big difference there is that I've been running 4e games for almost 12 months now and the times that I've had to go to the book to look up a "rule" are few and far in between. As a matter of fact for the last few months I've been running the game using only the DM Screen. The "powers" are exceptions but they work in such a way that I don't need to look each and everyone of them up. They usually have pretty consistent general rules. If I need to adjudicate something it usually has to do with something that is not stipulated in the power itself. For example, does the curtain catch on fire if I use X. Then it's adjudication time.
Internet boards are full of arguments, saying that 4e has more or less of them because it uses exception based rules is ridiculous at best.