Hi,
I stumbled upon this:
let's say you play a campaign where the heroes are stranded on some island and you don't want the wizard to get one certain spell.
The problem is, all the wizard has to do is get enough gold to scribe a scroll of that spell. Magic item creation says, you can create a magic item even if you do not have the required spell (only the DC increases by +5).
As soon as the scroll is written, the wizard can "learn" the spell and copy it to his spellbook.
Imho, that sounds ridiculous and was not intended ...
-Zordan