there's also enough innacurate crafting planners out there. What kind of game makes it mandatory to visit 3rd party websites in order to complete a task properly? Third party sites that don't always get it right. Plenty of mistakes have been made by people using these supposedly "accurate resources". It has nothing to do with reading comprehension. If you are going to take that approach, then there should at a minimum be an in game method to acquire the proper recipes. Though with ddo's track record of handing out "clear" instructions I can see why they shy away from doing this.
for the record I haven't made any mistakes with crafting (yet), only because I waited so long to begin crafting, I let everyone else stumble upon the potential problems first..