Or in other words, a lot of stuff is ijma, not actually from the hadiths or Sunna. (I think I spelled the last part of that right...)
Yes. That is one problem associated with the Koran. Some things, like Sharia ('Islamic Law') are based off of things that should be treated with extreme skepticism since anyone who had the slightest bit of influence could declare that Mohammad said something he didn't.
Another problem with Sharia is that the Koran only deals with a handful of legal issues, everything else needs to be extrapolated (the veils are an example of this - Mohammad's wives wore veils, thus it should be law).
Another problem is interpretation. Arabic has a lot of words that can have vastly different meanings depending on the translator's viewpoint. Two completely qualified Koranic scholars can [and do] interpret passages to have completely opposite meanings.
