Okay, so Camoranesi is "half Italian."
So take this Italian ethnicity and divide it in half. Take 4 and divide it by 2. What do you get? You get 2, which is clearly not 4. 4 does not equal 2.
I have probably about 5% English heritage. Can I play for England?
I have about 25% Irish heritage. Can I play for Ireland?
I have about 75% German heritage. Can I play for Germany? I don't know a word of German but gosh damn, I have that lineage in me that says I can play for Germany. Call up Joachim Löw and tell him I'm ready to go!