Awww man! Seriously?This has already been acknowledge by WotC as a mistake and is not an actual rule. There are a few mistakes in that book. For instance it suggests that you should stack untyped bonuses from the same named game element. see below.

This has already been acknowledge by WotC as a mistake and is not an actual rule. There are a few mistakes in that book. For instance it suggests that you should stack untyped bonuses from the same named game element. see below.
It's also written by Andy Collins.
Andy Collins was the guy in charge of everything you just mentioned.
Implements are items wielded by certain characters to channel their powers. Your class description or a feat tells you which implements you can wield, if any. The implement keyword identifies a power that can be used through an implement, and the implement must be a type wielded by the power’s class or paragon path. For example, to use an implement with a wizard power, the implement must be a type used by wizards, such as an orb or a wand, and you must be able to wield it. If a power, like one from a racial paragon path, has this keyword but isn’t associated with a class or a class paragon path, you can use any implement with that power, as long as you’re able to wield the implement.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.